APA (7th ed.) Citation

Petrak, F. (1952). Fungi beltsvillenses. III. Verlag Ferdinand Berger.

Chicago Style (17th ed.) Citation

Petrak, Franz. Fungi Beltsvillenses. III. Horn, Niederösterreich: Verlag Ferdinand Berger, 1952.

MLA (9th ed.) Citation

Petrak, Franz. Fungi Beltsvillenses. III. Verlag Ferdinand Berger, 1952.

Warning: These citations may not always be 100% accurate.