MLA

Thomas, Lowell. Out of This World : Across the Himalayas to Forbidden Tibet. New York: Greystone Press, 1950.

APA

Thomas, L. (1950). Out of this world : across the Himalayas to forbidden Tibet. New York: Greystone Press.

Chicago

Thomas, Lowell, Out of This World: Across the Himalayas to Forbidden Tibet. New York: Greystone Press, 1950.