APA (7e ed.) Bronvermelding

Ricketts Taylor Howard, Daily Gretchen Cara, Ehrlich Paul Ralph, Michener Charles Duncan, & National Academy of Sciences. Economic value of tropical forest to coffee production.

Chicago (17e ed.) Bronvermelding

Ricketts Taylor Howard, Daily Gretchen Cara, Ehrlich Paul Ralph, Michener Charles Duncan, en National Academy of Sciences. Economic Value of Tropical Forest to Coffee Production.

MLA (9e ed.) Bronvermelding

Ricketts Taylor Howard, et al. Economic Value of Tropical Forest to Coffee Production.