APA (7th ed.) Citation

Pax, F., & Knuth, R. (1905). Primulaceae. Wilhelm Engelmann.

Chicago Style (17th ed.) Citation

Pax, F., and Reinhard Knuth. Primulaceae. Leipzig: Wilhelm Engelmann, 1905.

MLA (8th ed.) Citation

Pax, F., and Reinhard Knuth. Primulaceae. Wilhelm Engelmann, 1905.

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