Gaya APA
Barret, M. (2004).
The Handbook of Clinically Tested Herbal Remedies (vol 1-2 combined) .
:
The Haworth Herbal Press.
Gaya MLA
Barret, Marilyn.
"The Handbook of Clinically Tested Herbal Remedies (vol 1-2 combined)".
:
The Haworth Herbal Press,
2004.
Text.