Aikins, Murphy. (1998).  Alternative therapies for nausea and vomiting of pregnancy.  Obstetical Gynecology, 91(1);149-55.

Bone, M. (1990).  Ginger root – a new antiemetic.  The effect of giner root on postoperative nausea and vomiting after major gynecological surgery.  Anaesthesia, 45:669-671.

Fulder, S. (1996).  Ginger and  pregnancy.  Herbalgram. 38, 47-50.

Micklefield, G., Redeker, Y., Meister, V., Jung, O., Greving, I., May, B. (1999).  Effects of ginger on gastroduodenal motility.  Internal Journal of Clinical Pharmacology Therapeutics, 37(7), 341-6.

Miller, L.  (1998).  Herbal medicinals:  selected clinical considerations focusing on known or potential drug-herb interactions.  Archives of Internal Medicine, 158(20), 2200-11.

Visalyaputra, S., Petchpaisit, N., Somcharoen, K., Choavaratana, R. (1998).  the efficacy of ginger root in the prevention of postoperative nausea and vomiting after outpatient gynaecological laparoscopy.  Anaesthesia,  53(5) 506-10.