APA (7th ed.) Citation

Engler, A., & Irmscher, E. (1916). Saxifragaceae-Saxifraga. Engelmann.

Chicago Style (17th ed.) Citation

Engler, Adolf, and Edgar Irmscher. Saxifragaceae-Saxifraga. Leipzig: Engelmann, 1916.

MLA (9th ed.) Citation

Engler, Adolf, and Edgar Irmscher. Saxifragaceae-Saxifraga. Engelmann, 1916.

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