Cita APA (7th ed.)

Birkfeld, A. (1971). Pilze. Ziemsen.

Cita Chicago (17th ed.)

Birkfeld, Alfred. Pilze. Wittenberg: Ziemsen, 1971.

Cita MLA (8th ed.)

Birkfeld, Alfred. Pilze. Ziemsen, 1971.