Gaya APA

Cunningham, F, G. et al (1997). Williams Obstetrics ; Buku 2 (22). Westport, Conn.: McGraw-Hill.

Gaya MLA

Cunningham, F., Gary. et al. "Williams Obstetrics ; Buku 2". 22 Westport, Conn.: McGraw-Hill, 1997. Text.