APA

Hyatt D. E., Gutenson O., . (1992). Biological populations as indicators of environmental change. Washington, D. C., USA: U. S. Environmental Protection Agency.

Chicago

Hyatt D E, Gutenson O, . 1992. Biological populations as indicators of environmental change. Washington, D. C., USA: U. S. Environmental Protection Agency.

Harvard

Hyatt D. E., Gutenson O., . (1992). Biological populations as indicators of environmental change. Washington, D. C., USA: U. S. Environmental Protection Agency.

MLA

Hyatt D E, Gutenson O, . Biological populations as indicators of environmental change. Washington, D. C., USA: U. S. Environmental Protection Agency. 1992.