Mathews, D. (1988). Cascade-Olympic natural history. Raven Editions in conjunction with the Audubon Society of Portland.
Cita Chicago Style (17a ed.)Mathews, Daniel. Cascade-Olympic Natural History. Portland, OR: Raven Editions in conjunction with the Audubon Society of Portland, 1988.
Cita MLA (8a ed.)Mathews, Daniel. Cascade-Olympic Natural History. Raven Editions in conjunction with the Audubon Society of Portland, 1988.
Precaución: Estas citas no son 100% exactas.