Cita APA (7a ed.)

Steinhagen, J., & Howland, J. (2010). Heart sounds: 12 catholic doctors. St. Luke's Books.

Cita Chicago Style (17a ed.)

Steinhagen, Janice, y John Howland. Heart Sounds: 12 Catholic Doctors. Southbridge: St. Luke's Books, 2010.

Cita MLA (9a ed.)

Steinhagen, Janice, y John Howland. Heart Sounds: 12 Catholic Doctors. St. Luke's Books, 2010.