APA (7th ed.) Citation

Engler, A., & Gilg, E. F. (1960). Liliaceae ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Engler, Adolf, and Ernst Friedrich Gilg. Liliaceae. [Sonderdr.]. 1960.

MLA (9th ed.) Citation

Engler, Adolf, and Ernst Friedrich Gilg. Liliaceae. [Sonderdr.]. 1960.

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