APA (7th ed.) Citation

Birken, S. v. (2017). Betuletum. Betuletum.

Chicago Style (17th ed.) Citation

Birken, Sigmund von. "Betuletum." Betuletum 2017.

MLA (8th ed.) Citation

Birken, Sigmund von. "Betuletum." Betuletum, 2017.

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