Cita APA (7a ed.)

Stevens, E. S. (1923). By Tigris and Euphrates. Hurst.

Cita Chicago Style (17a ed.)

Stevens, E. S. By Tigris and Euphrates. London: Hurst, 1923.

Cita MLA (9a ed.)

Stevens, E. S. By Tigris and Euphrates. Hurst, 1923.