APA (7th ed.) Citation

Lehmann, E., & Snell, K. (1915). Die Gattung Veronica ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Lehmann, Ernst, and K. Snell. Die Gattung Veronica. [Sonderdr.]. 1915.

MLA (9th ed.) Citation

Lehmann, Ernst, and K. Snell. Die Gattung Veronica. [Sonderdr.]. 1915.

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