Gaya APA

Levene, M, R, T, L, M. et al (2004). Dcecil Essentials of Medicine (6). : Saunder Elsevier Inc.

Gaya MLA

Levene, Mary, Rudolf;, Tim, Lee;, Malcolm. et al. "Dcecil Essentials of Medicine". 6 : Saunder Elsevier Inc, 2004. Text.