APA (7th ed.) Citation

Rhoads, A. F., & Klein, W. M. (1993). The vascular flora of Pennsylvania: Annotated checklist and atlas. American Philosophical Society.

Chicago Style (17th ed.) Citation

Rhoads, Ann Fowler, and William McKinley Klein. The Vascular Flora of Pennsylvania: Annotated Checklist and Atlas. Philadelphia, PA: American Philosophical Society, 1993.

MLA (9th ed.) Citation

Rhoads, Ann Fowler, and William McKinley Klein. The Vascular Flora of Pennsylvania: Annotated Checklist and Atlas. American Philosophical Society, 1993.