Citazione APA

Robbers, J. E., & Tyler, V. E. (2002). Tylers herbs of choice: The therapeutic use of phytomedicinals. CBS.

Stile di citazione Chicago

Robbers, James E., e Varro E. Tyler. Tylers Herbs of Choice: The Therapeutic Use of Phytomedicinals. New Delhi: CBS, 2002.

Citazione MLA

Robbers, James E., e Varro E. Tyler. Tylers Herbs of Choice: The Therapeutic Use of Phytomedicinals. CBS, 2002.