APA (7th ed.) Citation

Yeo, P. (1973). The Azorian species of Euphrasia ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Yeo, Peter. The Azorian Species of Euphrasia. [Sonderdr.]. 1973.

MLA (9th ed.) Citation

Yeo, Peter. The Azorian Species of Euphrasia. [Sonderdr.]. 1973.

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