Cita APA (7a ed.)
Halberg, N., & Müller, A. (2013). Organic agriculture for sustainable livelihoods. CTA / Earthscan.
Cita Chicago Style (17a ed.)
Halberg, N., y A. Müller. Organic Agriculture for Sustainable Livelihoods. CTA / Earthscan, 2013.
Cita MLA (9a ed.)
Halberg, N., y A. Müller. Organic Agriculture for Sustainable Livelihoods. CTA / Earthscan, 2013.
Precaución: Estas citas no son 100% exactas.