Chetwynd, Josh (2013). „Okay Sign”. The Book of Nice: A Nice Book about Nice Things for Nice People. Workman Publishing. str. 36—40. ISBN9780761172949. »opportune for those who relate, distinguish, or approve«
bostonglobe.com
Brodeur, Michael Andor (20. 9. 2018). „That hand symbol you're seeing everywhere? Not OK”. The Boston Globe. Pristupljeno 30. 9. 2018. »flood Twitter and other social media websites...claiming that the OK hand sign is a symbol of white supremacy«
btime.com
item.btime.com
„漫画《名侦探柯南》引发中国人数字手势大讨论-北京时间”. Beijine Time (na jeziku: кинески). Beijing New Media Group. 4. 9. 2016. Pristupljeno 17. 11. 2018.
„Cuidado com os gestos, eles podem representar outra coisa | DW | 5 September 2017”. DW.COM (na jeziku: португалски). Deutsche Welle. »O que em lugares da Europa significa 'muito bem!', na América Latina, Grécia, Rússia ou Espanha é um gesto obsceno. Na Tunísia, é xingar alguém de "nulidade". Já para executivos no Japão, significa 'vamos falar de negócios.'«
Lalithram (18. 9. 2017). „Upendra Birthday Special: 7 Films That Changed The Face of Kannada Film Industry!”. Filmi Beat. Pristupljeno 23. 2. 2019. »Super, is only a name that is given to it by the fans. But, Upendra had other thoughts in mind while naming the film. The actual title of the film is a depiction of a hand symbol (Vitarka Mudra).«
„Piramal”. Stories on Logo Designs. 13. 4. 2011. Pristupljeno 23. 2. 2019.
macedonianleague.org
„Gallery”. Macedonian League. 20. 5. 2015. Pristupljeno 3. 1. 2019. »VMRO-DPMNE political rally held by Prime Minister Nikola Gruevski in front of the Parliament in Skopje where many in the crowd raised a "three-finger" irredentist hand sign, meaning the unity of the lands of the fantasy country they call 'United Macedonia.'«
Lewis, Philip (2. 2. 2016). „6 Emojis That You've Been Using Wrong, And What They Actually Mean”. Pristupljeno 19. 11. 2018. »This emoji, which some assumed to be a ballerina performing a dance move, was intended to be used to signify an 'OK' gesture. 'It's supposed to be an OK symbol...The girl's arms are above her head because she's making an OK sign with her whole body (i.e. a circle, or large 'O'), which is a Japanese gesture.' Unicode lists the emoji as face with OK gesture.«
„Latest Skopje provocations in ruling party rally”. Thema News. 20. 5. 2015. Pristupljeno 4. 1. 2019. »Many in the crowd raised a 'three-finger' irredentist hand sign, meaning Vardar Macedonia, the 'Aegean part', and Pirin, and the 'O' from the word 'Obedineta' which means 'United' in the Slavic language that is spoken by the country's majority ethnos.«
qucosa.de
Merz, Andreas (14. 10. 2010). „Embleme im interkulturellen Vergleich: Eine Untersuchung zur Bedeutung von 16 Emblemen in Kolumbien und Deutschland” [Emblems in intercultural comparison: An investigation of meaning of 16 emblems in Colombia and Germany] (PDF) (na jeziku: немачки). Leipzig: Institut für Angewandte Linguistik: 73. Arhivirano iz originala(PDF) 11. 1. 2019. g. Pristupljeno 10. 1. 2019. »The top of the fore-finger moved to joyne with the naile of the Thumbe that's next to it, the other fingers in remitter«
Medhat, Noha (22. 11. 2015). „8 normal signs and gestures that can be offensive in the Middle East”. StepFeed. Pristupljeno 25. 2. 2019. »The 'OK': The sign is considered very insulting in Turkey and in some other Middle Eastern countries – such as Kuwait – where it denotes the evil eye.«
Merz, Andreas (14. 10. 2010). „Embleme im interkulturellen Vergleich: Eine Untersuchung zur Bedeutung von 16 Emblemen in Kolumbien und Deutschland” [Emblems in intercultural comparison: An investigation of meaning of 16 emblems in Colombia and Germany] (PDF) (na jeziku: немачки). Leipzig: Institut für Angewandte Linguistik: 73. Arhivirano iz originala(PDF) 11. 1. 2019. g. Pristupljeno 10. 1. 2019. »The top of the fore-finger moved to joyne with the naile of the Thumbe that's next to it, the other fingers in remitter«
Sherlock, David; Zajac, William. „A Fourteenth-Century Monastic Sign List From Bury St Edmunds Abbey”. Proceedings of the Suffolk Institute of Archaeology and History. Gloucester: Alan Sutton Publishing. 36 (4). ISSN0262-6004.