Panggabean, Marihot H.
Program Pascasarjana Universitas Indonesia, 2003
UI - Tesis (Membership)
Sholehien
Program Pascasarjana Universitas Indonesia, 2003
UI - Tesis (Membership)
Artikel Jurnal
Yang, W.Y.
Food and Agriculture Organization of the United Nations , 1968
Buku Teks
Kay, Ronald D.
McGraw-Hill, 2012
Buku Teks