APA (7th ed.) Citation

Barthels, W. (1926). Über die Meerzwiebel (Urginea maritima).

Chicago Style (17th ed.) Citation

Barthels, Wilhelm. Über Die Meerzwiebel (Urginea Maritima). 1926.

MLA (9th ed.) Citation

Barthels, Wilhelm. Über Die Meerzwiebel (Urginea Maritima). 1926.

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