APA (7th ed.) Citation

Porter, T. C., & Small, J. K. (1904). Catalogue of the Bryophyta (hepatics, anthocerotes and mosses) and Pteridophyta (ferns and fern-allies) found in Pennsylvania. Ginn.

Chicago Style (17th ed.) Citation

Porter, Thomas Conrad, and John Kunkel Small. Catalogue of the Bryophyta (hepatics, Anthocerotes and Mosses) and Pteridophyta (ferns and Fern-allies) Found in Pennsylvania. Boston: Ginn, 1904.

MLA (9th ed.) Citation

Porter, Thomas Conrad, and John Kunkel Small. Catalogue of the Bryophyta (hepatics, Anthocerotes and Mosses) and Pteridophyta (ferns and Fern-allies) Found in Pennsylvania. Ginn, 1904.