Citazione Stile APA (7a Edizione)

Martin, B. M., Butler, V. R., & De Leon, A. C. (1990). Normal & abnormal heart sounds. Springhouse.

Citazione stile Chigago Style (17a edizione)

Martin, Barbara M.S, Virginia RN Butler, e Antonio C. De Leon. Normal & Abnormal Heart Sounds. Springhouse, PA: Springhouse, 1990.

Citatione MLA (9a ed.)

Martin, Barbara M.S, et al. Normal & Abnormal Heart Sounds. Springhouse, 1990.