APA (7th ed.) Citation

Washington Native Plant Society. (1983). Douglasia occasional papers. The Society.

Chicago Style (17th ed.) Citation

Washington Native Plant Society. Douglasia Occasional Papers. [Seattle, Wash.]: The Society, 1983.

MLA (8th ed.) Citation

Washington Native Plant Society. Douglasia Occasional Papers. The Society, 1983.

Warning: These citations may not always be 100% accurate.