Grassi 2018; Shenfield 1999, p. 154 Grassi, Fabio L. (2018). A new homeland: The Massacre of The Circassians, Their Exodus To The Ottoman Empire and Their Place In Modern Turkey. Aydin University International. ISBN9781642261349. Shenfield, Stephen D. (1999). "The Circassians: A Forgotten Genocide?". ใน Levene, Mark; Roberts, Penny (บ.ก.). The Massacre in History. New York: Berghahn Books. pp. 149–162. ISBN978-1-57181-935-2.
Richmond 2013, p. 132: "If we assume that Berzhe's middle figure of 50,000 was close to the number who survived to settle in the lowlands, then between 95 percent and 97 percent of all Circassians were killed outright, died during Evdokimov's campaign, or were deported." Richmond, Walter (2013). The Circassian Genocide. Genocide, Political Violence, Human Rights. Rutgers University Press. ISBN978-0-8135-6069-4. สืบค้นเมื่อ 3 May 2016.
"Зумысыжмэ, ущхьэхуитщ!". Жьынэпс Гъазэтэ (ภาษาคาบาร์เดีย). 20 May 2020. สืบค้นเมื่อ 12 February 2022.
Gazetesi, Jıneps (2 September 2013). "Velyaminov, Zass ve insan kafası biriktirme hobisi" [Velyaminov, Zass and his hobby of collecting human heads]. Jıneps Gazetesi (ภาษาตุรกี). สืบค้นเมื่อ 26 September 2020.