APA (7th ed.) Citation

Yarborough, S. C., & Powell, A. M. (2002). Ferns and fern allies of the Trans-Pecos and adjacent areas. Texas Tech University Press.

Chicago Style (17th ed.) Citation

Yarborough, Sharon C., and A. Michael Powell. Ferns and Fern Allies of the Trans-Pecos and Adjacent Areas. Lubbock: Texas Tech University Press, 2002.

MLA (9th ed.) Citation

Yarborough, Sharon C., and A. Michael Powell. Ferns and Fern Allies of the Trans-Pecos and Adjacent Areas. Texas Tech University Press, 2002.