Gaya APA

Hughes, H, K., Kahl, L, K. (2018). THE JOHNS HOPKINS HOSPITAL : THE HARRIET LANE HANDBOOK . Twenty First Edition . : Elsevier.

Gaya MLA

Hughes, Helen, K., Kahl, Lauren, K. "THE JOHNS HOPKINS HOSPITAL : THE HARRIET LANE HANDBOOK . Twenty First Edition". : Elsevier, 2018. .