1. Developmental Anatomy: a Textbook and Laboratory Manual of Embryology;Arey,1954
2. Pathology of the Human Placenta;Benirschke,1990
3. Pathology of gestational trophoblastic diseases;Cheung;Best Practice and Research. Clinical Obstetrics and Gynaecology,2003
4. Fleetwood, M., Dunn, D.G., Stamatakos, M.D., McGill, L.D. and Lass, T.P. (2004). Ovarian placental site trophoblastic tumor in a cynomolgus monkey (Macaca fasicularis). In: Proceedings of the American College of Veterinary Pathologists and American Society for Veterinary Clinical Pathology 2004 Annual Meeting, Orlando, FL, USA, p. 114.
5. Spontaneous ovarian choriocarcinoma, yolk sac carcinoma, and teratoma in B6C3F1 mice: a case report;Frith;Toxicologic Pathology,1993