Gaya APA
Balaskas, Janet. (1989).
New Active Birth : a concise guide to natural childbirth .
London:
Unwin Paperbacks.
Gaya Chicago
Balaskas, Janet.
New Active Birth : a concise guide to natural childbirth.
London:
Unwin Paperbacks,
1989.
Buku Kebidanan.
Gaya MLA
Balaskas, Janet.
New Active Birth : a concise guide to natural childbirth.
London:
Unwin Paperbacks,
1989.
Buku Kebidanan.
Gaya Turabian
Balaskas, Janet.
New Active Birth : a concise guide to natural childbirth.
London:
Unwin Paperbacks,
1989.
Buku Kebidanan.