APA
Sachs I., Silk D., . (1990). Food And Energy : Strategies For Sustainable Development. : United Nations University Press.
Chicago
Sachs I, Silk D, . 1990. Food And Energy : Strategies For Sustainable Development. : United Nations University Press.
Harvard
Sachs I., Silk D., . (1990). Food And Energy : Strategies For Sustainable Development. : United Nations University Press.
MLA
Sachs I, Silk D, . Food And Energy : Strategies For Sustainable Development. : United Nations University Press. 1990.