APA (7th ed.) Citation

Zahn, K. H. Compositae - Hieracium. Wilhelm Engelmann.

Chicago Style (17th ed.) Citation

Zahn, K. H. Compositae - Hieracium. Leipzig: Wilhelm Engelmann.

MLA (8th ed.) Citation

Zahn, K. H. Compositae - Hieracium. Wilhelm Engelmann.

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