APA

Doppelt B., Scurlock M., Frissell C., Karr J. & The Pacific Rivers Council. (1993). Entering the Watershed. Wasington, D.C: Island Press.

Chicago

Doppelt Bob, Scurlock Mary, Frissell Chris, Karr James and The Pacific Rivers Council. 1993. Entering the Watershed. Wasington, D.C: Island Press.

Harvard

Doppelt B., Scurlock M., Frissell C., Karr J. and The Pacific Rivers Council. (1993). Entering the Watershed. Wasington, D.C: Island Press.

MLA

Doppelt Bob, Scurlock Mary, Frissell Chris, Karr James and The Pacific Rivers Council. Entering the Watershed. Wasington, D.C: Island Press. 1993.