Gaya APA
curtis, G, B., Widianto, G. (1999).
Kehamilan : Apa yang Anda Hadapi Minggu per Minggu = Your Pregnancy Week by Week .
Jakarta:
Arcan.
Gaya MLA
curtis, Glade, B., Widianto, Gianto.
"Kehamilan : Apa yang Anda Hadapi Minggu per Minggu = Your Pregnancy Week by Week".
Jakarta:
Arcan,
1999.
Text.