APA Style
Kliegman, R, M., St, G, I, J, W. (2020).
Nelson Textbook of Pediatrics - volume 2 (21st ed.).
Philadelphia:
Elsevier.
MLA Style
Kliegman, Robert, M.., St, Geme, III,, Joseph, W.
"Nelson Textbook of Pediatrics - volume 2".
21st ed.
Philadelphia:
Elsevier,
2020.
Text.