Lewin, A. C.
John Wiley & Sons, 1981
Buku Teks
Mukti Andriyanto, author
2018
UI - Tesis (Membership)
Slate, Floyd O.
Cornell University, 1974
Buku Referensi
Dulfer, Eberhard
FAO of the United Nations , 1974
Buku Teks
edited by Geoffrey K. Payne
John Wiley & Sons, 1984
Buku Teks