Cita APA (7th ed.)
Ekvall, R. B. (1938). Gateway to Tibet: The Kansu-Tibetan border. Christian Publications, inc.
Cita Chicago (17th ed.)
Ekvall, Robert B. Gateway to Tibet: The Kansu-Tibetan Border. Harrisburg, Pa.: Christian Publications, inc, 1938.
Cita MLA (9th ed.)
Ekvall, Robert B. Gateway to Tibet: The Kansu-Tibetan Border. Christian Publications, inc, 1938.
Atenció: Aquestes cites poden no estar 100% correctes.