?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Manalu&rft.au=Manalu%2C+Helper+Sahat+P.&rft.aufirst=Helper+Sahat+P.&rft.date=2012&rft.btitle=Etnik+Nias+Desa+Hilifad%C3%B6l%C3%B6%2C+Kecamatan+L%C3%B6l%C3%B6wa%E2%80%99u+Kabupaten+Nias+Selatan%2C+Provinsi+Sumatera+Utara+(Buku+Seri+Etnografi+Kesehatan+Ibu+dan+Anak+2012)&rft.isbn=978-602-235-229-7&rft.genre=book