Cita APA

Gregor, H. F. (1970). Geography of agriculture: Theme in research. Prentice - Hall.

Citación estilo Chicago

Gregor, Howard F. Geography of Agriculture: Theme in Research. Englewood Cliffs: Prentice - Hall, 1970.

Cita MLA

Gregor, Howard F. Geography of Agriculture: Theme in Research. Prentice - Hall, 1970.

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