Found in articles
کمونیسم
Encyclopædia Britannica, Inc. McDougall, Walter A. (2020). "20th-century international relations". Encyclopædia Britannica (به انگلیسی). Encyclopædia
"Encyclopedias and Dictionaries", Encyclopædia Britannica, Vol. 18 (به انگلیسی) (15th ed.), Encyclopædia Britannica, Inc., 2007, p. 257–286 Kenneth Kister
(2006). "Muhammad". Encyclopædia Britannica Online (به انگلیسی). Encyclopædia Britannica, Inc. Olsson, Tord; Ozdalga, Elisabeth; Raudvere, Catharina (2005)
جغرافیا. انجمن جغرافیدانان ایران. "Asia". eb.com, Encyclopædia Britannica. Chicago: Encyclopædia Britannica, Inc. 2006. National Geographic Atlas of the World
"Koryŏ dynasty | Korean history". Encyclopedia Britannica (به انگلیسی). Encyclopædia Britannica, Inc. Retrieved 8 February 2019. Kim 2012, p. 120. Lee