Gaya APA

Mann, D, L., Felker, G, M. (2016). Heart Failure: A Companion to Braunwald's Heart Disease (3rd ed). Philadelphia: Elsevier.

Gaya MLA

Mann, Douglas, L.., Felker, G., Michael. "Heart Failure: A Companion to Braunwald's Heart Disease". 3rd ed Philadelphia: Elsevier, 2016. Text.