APA Style

Hunsaker,C.T, Carpenter,E.D. (1990). Environmental Monitoring and Assessment Program Ecological Indicators . USA: Environmental Protection Agency.

Chicago Style

Hunsaker,C.T, Carpenter,E.D. Environmental Monitoring and Assessment Program Ecological Indicators. USA: Environmental Protection Agency, 1990. .

MLA Style

Hunsaker,C.T, Carpenter,E.D. Environmental Monitoring and Assessment Program Ecological Indicators. USA: Environmental Protection Agency, 1990. .

Turabian Style

Hunsaker,C.T, Carpenter,E.D. Environmental Monitoring and Assessment Program Ecological Indicators. USA: Environmental Protection Agency, 1990. .