APA (7th ed.) Citation

Guard, B. J., & Steen, T. (1995). Wetland plants of Oregon & Washington. Lone Pine Publishing.

Chicago Style (17th ed.) Citation

Guard, B. Jennifer, and Trygve Steen. Wetland Plants of Oregon & Washington. Redmond, Wash.: Lone Pine Publishing, 1995.

MLA (8th ed.) Citation

Guard, B. Jennifer, and Trygve Steen. Wetland Plants of Oregon & Washington. Lone Pine Publishing, 1995.

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