APA Edition Citation

Hoppen, H. J. (1969). Farm implements for arid and tropical regions. FAO of the UN.

Chicago Edition Citation

Hoppen, H J. Farm Implements for Arid and Tropical Regions. Rome: FAO of the UN, 1969.

MLA Edition Citation

Hoppen, H J. Farm Implements for Arid and Tropical Regions. FAO of the UN, 1969.

Warning: These citations may not always be 100% accurate.