Cita APA (7th ed.)

Smith, A. H. (1972). The North American species of psathyrella. New York Botanical Garden.

Cita Chicago (17th ed.)

Smith, Alexander Hanchett. The North American Species of Psathyrella. Bronx, N.Y.: New York Botanical Garden, 1972.

Cita MLA (8th ed.)

Smith, Alexander Hanchett. The North American Species of Psathyrella. New York Botanical Garden, 1972.