Cita APA (7a ed.)

Zinke, G. W. (1967). The problem of Malthus: Must progress end in overpopulation. University Colorado Press.

Cita Chicago Style (17a ed.)

Zinke, George W. The Problem of Malthus: Must Progress End in Overpopulation. Boulder: University Colorado Press, 1967.

Cita MLA (9a ed.)

Zinke, George W. The Problem of Malthus: Must Progress End in Overpopulation. University Colorado Press, 1967.