Sheehan, M., & Schuller, R. (1981). An illustrated guide to the endangered, threatened, and sensitive vascular plants of Washington. The Program.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSheehan, Mark, और 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.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSheehan, Mark, और Reid Schuller. An Illustrated Guide to the Endangered, Threatened, and Sensitive Vascular Plants of Washington. The Program, 1981.
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