Cita APA (7a ed.)

Johnson, A. M. (1931). Taxonomy of the flowering plants. The Century.

Cita Chicago Style (17a ed.)

Johnson, Arthur Monrad. Taxonomy of the Flowering Plants. New York: The Century, 1931.

Cita MLA (9a ed.)

Johnson, Arthur Monrad. Taxonomy of the Flowering Plants. The Century, 1931.