Cita APA

Gregor, H. F. (1963). Environment and economic life: An economic and social geography. Van Nostrand.

Citación estilo Chicago

Gregor, Howard F. Environment and Economic Life: An Economic and Social Geography. Princeton, N.J.: Van Nostrand, 1963.

Cita MLA

Gregor, Howard F. Environment and Economic Life: An Economic and Social Geography. Van Nostrand, 1963.

Warning: These citations may not always be 100% accurate.