APA (7th ed.) Citation

Friis, I. (1984). Studies in tropical African Urticaceae and Moraceae.

Chicago Style (17th ed.) Citation

Friis, Ib. Studies in Tropical African Urticaceae and Moraceae. Uppsala, 1984.

MLA (9th ed.) Citation

Friis, Ib. Studies in Tropical African Urticaceae and Moraceae. 1984.

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