Gaya APA
Hermann, Carol B.. (199).
Periodic abstinence in developing countries: update and policy options/ Carol B. Hermann .
Westinghouse:
Demographic Data for Development.
Gaya Chicago
Hermann, Carol B..
Periodic abstinence in developing countries: update and policy options/ Carol B. Hermann.
Westinghouse:
Demographic Data for Development,
199.
.
Gaya MLA
Hermann, Carol B..
Periodic abstinence in developing countries: update and policy options/ Carol B. Hermann.
Westinghouse:
Demographic Data for Development,
199.
.
Gaya Turabian
Hermann, Carol B..
Periodic abstinence in developing countries: update and policy options/ Carol B. Hermann.
Westinghouse:
Demographic Data for Development,
199.
.