Gaya APA
Allen, D., Hatfied, G. (2004).
Medicinal Plants in Folk Tradition : an Ethnobotany Of Britain & Ireland .
London:
Portland Combrige.
Gaya MLA
Allen, David., Hatfied, Gabrielle.
"Medicinal Plants in Folk Tradition : an Ethnobotany Of Britain & Ireland".
London:
Portland Combrige,
2004.
Text.