APA (7th ed.) Citation

Song, Q., & Li, D. Retroperitoneal Ectopic Pregnancy. Wiley.

Chicago Style (17th ed.) Citation

Song, Qingying, and Dan Li. Retroperitoneal Ectopic Pregnancy. Wiley.

MLA (9th ed.) Citation

Song, Qingying, and Dan Li. Retroperitoneal Ectopic Pregnancy. Wiley.

Warning: These citations may not always be 100% accurate.