APA (7th ed.) Citation

Yeo, P. (1970). Euphrasia brevipila and E. borealis in the British Isles ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Yeo, Peter. Euphrasia Brevipila and E. Borealis in the British Isles. [Sonderdr.]. 1970.

MLA (9th ed.) Citation

Yeo, Peter. Euphrasia Brevipila and E. Borealis in the British Isles. [Sonderdr.]. 1970.

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