Gaya APA
Heardman, H.
(1996).
SENAM HAMIL : (relaxation and axercise for childbirth)
.
jakarta:
Arcan.
Gaya MLA
Heardman, H..
"SENAM HAMIL : (relaxation and axercise for childbirth)".
jakarta:
Arcan,
1996.
Text.