APA (7th ed.) Citation

Forest and Rangeland Ecosystem Science Center (U.S.) & United States. National Park Service. (2002). Bryophytes and lichens: Small but indispensable forest dwellers. USGS Forest and Rangeland Ecosysem Science Center.

Chicago Style (17th ed.) Citation

Forest and Rangeland Ecosystem Science Center (U.S.) and United States. National Park Service. Bryophytes and Lichens: Small but Indispensable Forest Dwellers. [Port Angeles, Wash.]: USGS Forest and Rangeland Ecosysem Science Center, 2002.

MLA (9th ed.) Citation

Forest and Rangeland Ecosystem Science Center (U.S.) and United States. National Park Service. Bryophytes and Lichens: Small but Indispensable Forest Dwellers. USGS Forest and Rangeland Ecosysem Science Center, 2002.