APA (7th ed.) Citation

Allen, T. F. (1879). Characeae Americanae. T.F. Allen.

Chicago Style (17th ed.) Citation

Allen, Timothy Field. Characeae Americanae. New York: T.F. Allen, 1879.

MLA (8th ed.) Citation

Allen, Timothy Field. Characeae Americanae. T.F. Allen, 1879.