Cita APA (7a ed.)

Hecht, H. H. (1950). Basic principles of clinical electrocardiography. Charles Thomas.

Cita Chicago Style (17a ed.)

Hecht, Hans H. Basic Principles of Clinical Electrocardiography. Springfield: Charles Thomas, 1950.

Cita MLA (9a ed.)

Hecht, Hans H. Basic Principles of Clinical Electrocardiography. Charles Thomas, 1950.