Cita APA

Gregor, H. F. (1970). Geography of agriculture; themes in research. Englewood Cliffs, N. J.: Prentice-Hall.

Citación estilo Chicago

Gregor, Howard F. Geography of Agriculture; Themes in Research. Englewood Cliffs, N. J.: Prentice-Hall, 1970.

Cita MLA

Gregor, Howard F. Geography of Agriculture; Themes in Research. Englewood Cliffs, N. J.: Prentice-Hall, 1970.

Precaución: Estas citas no son 100% exactas.