Tohutoro APA (7th ed.)
Ekvall, R. B. (1938). Gateway to Tibet: The Kansu-Tibetan border. Christian Publications, inc.
Tohutoru Kātū Chicago (17th ed.)
Ekvall, Robert B. Gateway to Tibet: The Kansu-Tibetan Border. Harrisburg, Pa.: Christian Publications, inc, 1938.
Tohutoro MLA (9th ed.)
Ekvall, Robert B. Gateway to Tibet: The Kansu-Tibetan Border. Christian Publications, inc, 1938.
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