Gaya APA

Engorn, B., Flerlage, J. (2012). The Johns Hopkins Hospital : THE HARRIET LANE HANDBOOK (Twentieth Edition) . USA: Elsevier Saunders.

Gaya MLA

Engorn, Branden., Flerlage, Jamie. "The Johns Hopkins Hospital : THE HARRIET LANE HANDBOOK (Twentieth Edition)". USA: Elsevier Saunders, 2012. Text.