Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

Birkfeld, Alfred. Pilze. Ziemsen, 1971.