APA (7th ed.) Citation

Watkins, C., Kolehmainen, J., & Schulman, L. (2002). The wild African violet: Saintpaulia (Gesneriaceae) ; an interim guide. Worldstage.

Chicago Style (17th ed.) Citation

Watkins, Colin, Johanna Kolehmainen, and Leif Schulman. The Wild African Violet: Saintpaulia (Gesneriaceae) ; an Interim Guide. Cambridge: Worldstage, 2002.

MLA (9th ed.) Citation

Watkins, Colin, et al. The Wild African Violet: Saintpaulia (Gesneriaceae) ; an Interim Guide. Worldstage, 2002.