Gaya APA

Hughes, H, K., Kahl, L, K. (2018). The Johns Hopkins Hospital: The Harriet Lane Handbook (21st Edition). Philadelphia: Elsevier.

Gaya MLA

Hughes, Helen, K.., Kahl, Lauren, K.. "The Johns Hopkins Hospital: The Harriet Lane Handbook". 21st Edition Philadelphia: Elsevier, 2018. Text.