APA (7th ed.) Citation

Engler, A., & Irmscher, E. (1919). Saxifragaceae - Saxifraga. Wilhelm Engelmann.

Chicago Style (17th ed.) Citation

Engler, A., and E. Irmscher. Saxifragaceae - Saxifraga. Leipzig: Wilhelm Engelmann, 1919.

MLA (8th ed.) Citation

Engler, A., and E. Irmscher. Saxifragaceae - Saxifraga. Wilhelm Engelmann, 1919.

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