Sheehan, M., & Schuller, R. (1981). An illustrated guide to the endangered, threatened, and sensitive vascular plants of Washington. The Program.
Cita Chicago Style (17a ed.)Sheehan, Mark, y Reid Schuller. An Illustrated Guide to the Endangered, Threatened, and Sensitive Vascular Plants of Washington. [Olympia, WA] (3111 Seminar Bldg., SE 3109, Evergreen State College, Olympia 98505): The Program, 1981.
Cita MLA (8a ed.)Sheehan, Mark, y Reid Schuller. An Illustrated Guide to the Endangered, Threatened, and Sensitive Vascular Plants of Washington. The Program, 1981.
Precaución: Estas citas no son 100% exactas.