McRobie, G. (1990). Tools for organic farming: A manual of appropiate equipment and treatments. Intermediate Technology.
Chicago-Zitierstil (17. Ausg.)McRobie, George. Tools for Organic Farming: A Manual of Appropiate Equipment and Treatments. Londres: Intermediate Technology, 1990.
MLA-Zitierstil (9. Ausg.)McRobie, George. Tools for Organic Farming: A Manual of Appropiate Equipment and Treatments. Intermediate Technology, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.