Statistics Committee of Ukraine. [17 January 2012]. (原始内容存档于2012-03-06). JamesStuartOlson (编). An Ethnohistorical dictionary of the Russian and Soviet empires
Persian was the official language of the Sassanian dynasty" JamesStuartOlson(英语:JamesStuartOlson). An Ethnohistorical Dictionary of the Russian and Soviet
2010: 175 [2021-01-24]. ISBN 978-0-19-533770-9. (原始内容存档于2017-03-23). JamesStuartOlson. The Peoples of Africa: An Ethnohistorical Dictionary. Greenwood.
需要该岛来控制基尔运河和通往德国北海港口的航线。作为交换,德国放弃了在非洲桑给巴尔地区的权利,桑给巴尔成为英国控制东非的重要支点。 JamesStuartOlson; Robert Shadle. Historical Dictionary of European Imperialism. Greenwood
Race, Ethnicity, and Society, Volume 1, SAGE Publications, p. 1341. JamesStuartOlson, Lee Brigance Pappas & Nicholas Charles Pappas, 1994, An Ethnohistorical