APA-referens (7:e uppl.)

Não informado. (1992). Journal of Agricultural and Resource Economics. Western Agricultural Economics Association.

Chicago-referens (17:e uppl.)

Não informado. Journal of Agricultural and Resource Economics. Bozeman, Mont: Western Agricultural Economics Association, 1992.

MLA-referens (8:e uppl.)

Não informado. Journal of Agricultural and Resource Economics. Western Agricultural Economics Association, 1992.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.