1. Tyler VE (1988) The new honest herbal: a sensible guide to the use of herbs and related remedies. 2nd ed. Philadelphia: George F Stickley
2. Millspaugh CF (1974) American medicinal plants. 1st ed. New York: Dover Publications
3. Wade A, Reynolds JEF (eds) (1977) Martindale: the extra pharmacopoeia. 27th ed. London: The Pharmaceutical Press
4. Tyler VE, Brady LR, Robbers JE (eds) (1976) Pharmacognosy, 7th ed. Philadelphia: Lea & Febiger
5. Sleckman BP, Sherma J, Mineo LC (1983) Determination of pulegone in Hedeoma pulegioides and peppermint oil by thin layer chromatography with densitometry. J Liq Chromatogr 6: 1175–1182