APA Edition Citation

Ehruch. (1977). Ecoscience: Population resources environment. W.H Freeman and CO.

Chicago Edition Citation

Ehruch. Ecoscience: Population Resources Environment. New York: W.H Freeman and CO, 1977.

MLA Edition Citation

Ehruch. Ecoscience: Population Resources Environment. W.H Freeman and CO, 1977.

Warning: These citations may not always be 100% accurate.