APA (7e ed.) Bronvermelding
Hahlbrock, K., Skogley, D., & Wiegandt, K. (2009). Feeding the planet: Environmental protection through sustainable agriculture. Haus Publishing.
Chicago (17e ed.) Bronvermelding
Hahlbrock, Klaus, David Skogley, en Klaus Wiegandt. Feeding the Planet: Environmental Protection Through Sustainable Agriculture. London, [England]: Haus Publishing, 2009.
MLA (9e ed.) Bronvermelding
Hahlbrock, Klaus, et al. Feeding the Planet: Environmental Protection Through Sustainable Agriculture. Haus Publishing, 2009.
Let op: Deze citaties zijn niet altijd 100% accuraat.