APA

Gill B. D., . (1991). Dung beetles in tropical american forests. New Jersey: Princeton University Press.

Chicago

Gill Bruce D, . 1991. Dung beetles in tropical american forests. New Jersey: Princeton University Press.

Harvard

Gill B. D., . (1991). Dung beetles in tropical american forests. New Jersey: Princeton University Press.

MLA

Gill Bruce D, . Dung beetles in tropical american forests. New Jersey: Princeton University Press. 1991.