APA (7th ed.) Citation

Hafl, A. J., White, J. G., & White, R. (1999). The key to the name of the rose. Jalasutra.

Chicago Style (17th ed.) Citation

Hafl, Adele J., Jane G. White, and Robert White. The Key to the Name of the Rose. Jalasutra, 1999.

MLA (8th ed.) Citation

Hafl, Adele J., et al. The Key to the Name of the Rose. Jalasutra, 1999.