APA (7th ed.) Citation

Engler, A. Gesneriaceae africanae. Engelmann.

Chicago Style (17th ed.) Citation

Engler, Adolf. Gesneriaceae Africanae. Leipzig: Engelmann.

MLA (9th ed.) Citation

Engler, Adolf. Gesneriaceae Africanae. Engelmann.

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