Gaya APA

Schulz, V. et al (2004). Rational Phytotherapy: A Reference Guide for Physicians and Pharmacists Fifth Edition (5th edition). Berlin: Springer.

Gaya MLA

Schulz, Volker. et al. "Rational Phytotherapy: A Reference Guide for Physicians and Pharmacists Fifth Edition". 5th edition Berlin: Springer, 2004. Text.