APA Style

MD, R, M, K. et al (2015). Nelson_Text_Book_of_Pediatrics, 2-Volume Set, 20e _230927_091015 (20th ed.). : Elsevier.

MLA Style

MD, Robert, M., Kliegman. et al. "Nelson_Text_Book_of_Pediatrics, 2-Volume Set, 20e _230927_091015". 20th ed. : Elsevier, 2015. Text.