Cita APA (7a ed.)

Thompson, M., & Freeman, O. W. (1950). The conservation of Northwest resources. Northwest Conservation League.

Cita Chicago Style (17a ed.)

Thompson, Margaret, y Otis W. Freeman. The Conservation of Northwest Resources. Seattle: Northwest Conservation League, 1950.

Cita MLA (8a ed.)

Thompson, Margaret, y Otis W. Freeman. The Conservation of Northwest Resources. Northwest Conservation League, 1950.

Precaución: Estas citas no son 100% exactas.