Cita APA (7a ed.)

Geiger, G. R. (1931). The Philosophy of Henry George. Columbia University.

Cita Chicago Style (17a ed.)

Geiger, George Raymond. The Philosophy of Henry George. Grand Forks, North Dakota: Columbia University, 1931.

Cita MLA (9a ed.)

Geiger, George Raymond. The Philosophy of Henry George. Columbia University, 1931.