Encyclopaedia Britannica, inc, Hudson, G. D., & Yust, W. (1954). Encyclopaedia Britannica world atlas: World distributions and world political geography, political-physical maps, geographical summaries, geographical comparisons, glossary of geographical terms, index to political-physical maps (Unabridged.). Published by Encyclopaedia Britannica, Inc.
Παραπομπή σε μορφή Chicago (17η εκδ.)Encyclopaedia Britannica, inc, G. Donald Hudson, και Walter Yust. Encyclopaedia Britannica World Atlas: World Distributions and World Political Geography, Political-physical Maps, Geographical Summaries, Geographical Comparisons, Glossary of Geographical Terms, Index to Political-physical Maps. Unabridged. Chicago: Published by Encyclopaedia Britannica, Inc, 1954.
Παραπομπή σε μορφή MLA (9th εκδ.)Encyclopaedia Britannica, inc, et al. Encyclopaedia Britannica World Atlas: World Distributions and World Political Geography, Political-physical Maps, Geographical Summaries, Geographical Comparisons, Glossary of Geographical Terms, Index to Political-physical Maps. Unabridged. Published by Encyclopaedia Britannica, Inc, 1954.