Παραπομπή APA

John Gareth Jones & Jones,John Gareth. (1993). Agriculture and the environment. Ellis Horwood ltd.

Παραπομπή Chicago Style

John Gareth Jones και Jones,John Gareth. Agriculture and the Environment. England: Ellis Horwood ltd, 1993.

Παραπομπή MLA

John Gareth Jones και Jones,John Gareth. Agriculture and the Environment. Ellis Horwood ltd, 1993.