APA (7th ed.) Citation

Metchnikoff, E. (1881). Untersuchungen über Orthonectiden. s. n.

Chicago Style (17th ed.) Citation

Metchnikoff, Élie. Untersuchungen Über Orthonectiden. [S. l: s. n, 1881.

MLA (8th ed.) Citation

Metchnikoff, Élie. Untersuchungen Über Orthonectiden. s. n, 1881.

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