MLA

Gaggin, and James L Januzzi Jr.. Mgh Cardiology Board Review. Springer International Publishing, 2021.

APA

Gaggin, G., & Januzzi Jr., J. L. (2021). MGH Cardiology Board Review. Springer International Publishing.

Chicago

Gaggin, and James L Januzzi Jr.. MGH Cardiology Board Review. : Springer International Publishing, 2021.