APA Style

Longo, D, L. et al (2012). HARRISON'S PRINCIPLES OF INTERNAL MEDICINE (18th edn. (Vol-1,2)). New York: Mcgraw-Hill Medical Publishing Division..

MLA Style

Longo, Dan, L.. et al. "HARRISON'S PRINCIPLES OF INTERNAL MEDICINE". 18th edn. (Vol-1,2) New York: Mcgraw-Hill Medical Publishing Division., 2012. Text.