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APA (7th ed.) Zitazioa
Ravenstein Ernst Georg. (1889). A map of part of Eastern Africa, prepared by authority of the Imperial British East Africa Company. George Philip & Son.
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Chicago Style (17th ed.) Zitazioa
Ravenstein Ernst Georg. A map of Part of Eastern Africa, Prepared by Authority of the Imperial British East Africa Company. George Philip & Son, 1889.
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MLA (9th ed.) Zitazioa
Ravenstein Ernst Georg. A map of Part of Eastern Africa, Prepared by Authority of the Imperial British East Africa Company. George Philip & Son, 1889.
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Kontuz: berrikusi erreferentzia hauek erabili aurretik.