Gaya APA

Briggs, D., Courtney, F. (1991). Agriculture and environment : the physical geography of temperate agrucutural systems (1st ed.). England: Longman Scientific \\n Technical.

Gaya MLA

Briggs, David., Courtney, Frank. "Agriculture and environment : the physical geography of temperate agrucutural systems". 1st ed. England: Longman Scientific \\n Technical, 1991. Text.