Daushvili, Aleko (2012-01-01). The Democratic Republic of Georgia: Struggle for Independence 1918-1921. pp. 41. https://www.academia.edu/39848669. "By autumn of 1918 the Zakatala district was officially a part of the Republic of Azerbaijan. Having the support of Turkey and the convenience of a shared Islamic religion, the Azerbaijani state heavily enforced anti-Georgian propaganda in the region. With the help of local mullahs, the Muslim-Georgian population easily came under Azerbaijani influence, which in turn created the illusion that Zakatala was fully incorporated into Azerbaijan."
Javakhishvili, Ivane. CAUCASIOLOGIC PAPERS. Tbilisi: Tbilisi State University, 2011 — 235-bet. „Simultaneously, Georgia and Azerbaijan have tried to include Zakatala District ... Georgia's attempts were unsuccessful, because the Georgians were less than 20% of the population of the district, and the stake was only on them. Azerbaijan … [was] more successful in their attempts, because the idea appealed to Islamic unity.“