Cita APA (7a ed.)

Balchin, W., & Richards, A. (1952). Practical and experimental geography. Methuen.

Cita Chicago Style (17a ed.)

Balchin, W.G.V, y A.W Richards. Practical and Experimental Geography. London: Methuen, 1952.

Cita MLA (9a ed.)

Balchin, W.G.V, y A.W Richards. Practical and Experimental Geography. Methuen, 1952.