South Korea’s K9 self-propelled artillery production to roll into 2021 [online]. Jane's, rev. 2018-10-15 [cit. 2018-10-22]. Dostupné online. (anglicky)
K9 selected for Indian Army SPH requirement [online]. Jane's, rev. 2015-10-09 [cit. 2016-05-17]. Dostupné online. (anglicky)
thedefensepost.com
BISHT, Inder Singh. Estonia Buys a Dozen Additional K9 Howitzers [online]. The Defense Post, 2023-01-17 [cit. 2023-01-17]. Dostupné online. (anglicky)
thediplomat.com
India’s Newest Gun: Fast and Deadly [online]. The Diplomat, rev. 2016-10-09 [cit. 2018-10-22]. Dostupné online. (anglicky)
washingtonpost.com
Associated Press. First delivery of S. Korean heavy weapons comes to Poland. The Washington Post. 2022-12-06. Dostupné online [cit. 2022-12-09]. (anglicky)
web.archive.org
K9 Thunder 155-mm self-propelled howitzer [online]. Military-today.com [cit. 2016-05-16]. Dostupné v archivu pořízeném dne 2016-12-11. (anglicky)
worldcat.org
ROVENSKÝ, Dušan. Moderní samohybná děla. ATM. 2016, roč. 48, čís. 5, s. 12. ISSN1802-4823.
