APA (7th ed.) Citation

(1989). Papers from the IV World Congress on Gestational Trophoblastic Diseases, Beijing, China, September 1988: 1988. [s.n.].

Chicago Style (17th ed.) Citation

Papers from the IV World Congress on Gestational Trophoblastic Diseases, Beijing, China, September 1988: 1988. New Haven, CT: [s.n.], 1989.

MLA (9th ed.) Citation

Papers from the IV World Congress on Gestational Trophoblastic Diseases, Beijing, China, September 1988: 1988. [s.n.], 1989.