Gaya APA

Opie, L, H., Gersh, B, J. (2008). Drugs For The Heart Ed. 7 (7 ed). Philadelphia: Saunders.

Gaya MLA

Opie, Lionel, H.., Gersh, Bernard, J.. "Drugs For The Heart Ed. 7". 7 ed Philadelphia: Saunders, 2008. Text.