APA (7th ed.) Citation

Cassels, D. E. (1973). The ductus arteriosus. Thomas.

Chicago Style (17th ed.) Citation

Cassels, Donald E. The Ductus Arteriosus. Springfield, Ill.: Thomas, 1973.

MLA (8th ed.) Citation

Cassels, Donald E. The Ductus Arteriosus. Thomas, 1973.

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