Cita APA (7a ed.)

Wheatley, H. (1997). Agriculture, resource explotation and environment change. Variorum.

Cita Chicago Style (17a ed.)

Wheatley, Helen. Agriculture, Resource Explotation and Environment Change. [Aldershot]: Variorum, 1997.

Cita MLA (9a ed.)

Wheatley, Helen. Agriculture, Resource Explotation and Environment Change. Variorum, 1997.