APA (7th ed.) Citation

Fenderson, G. K. (1986). A synoptic guide to the genus Primula. Allen Press.

Chicago Style (17th ed.) Citation

Fenderson, G. K. A Synoptic Guide to the Genus Primula. Lawrence, Kan., U.S.A.: Allen Press, 1986.

MLA (9th ed.) Citation

Fenderson, G. K. A Synoptic Guide to the Genus Primula. Allen Press, 1986.