APA (7th ed.) Citation

Hamer, J. (1987). Echocardiography. Boehringer Ingelheim.

Chicago Style (17th ed.) Citation

Hamer, J.P.M. Echocardiography. Utrecht: Boehringer Ingelheim, 1987.

MLA (9th ed.) Citation

Hamer, J.P.M. Echocardiography. Boehringer Ingelheim, 1987.

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