APA (7th ed.) Citation

Chang, S., & Chang, J. K. (1981). Echocardiography : techniques and interpretation / Sonia Chang, with the assistance of John K. Chang: Techniques and interpretation (2nd ed.). Lea & Febiger.

Chicago Style (17th ed.) Citation

Chang, Sonia, and John K. Chang. Echocardiography : Techniques and Interpretation / Sonia Chang, with the Assistance of John K. Chang: Techniques and Interpretation. 2nd ed. Philadelphia: Lea & Febiger, 1981.

MLA (9th ed.) Citation

Chang, Sonia, and John K. Chang. Echocardiography : Techniques and Interpretation / Sonia Chang, with the Assistance of John K. Chang: Techniques and Interpretation. 2nd ed. Lea & Febiger, 1981.

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