Peffer, Nathaniel, author
University of Michigan Press, 1958
Buku Teks
Moo,Harriet L
Princeton University press, 1945
Buku Teks
Bisson, T.A., author
International Secretariat Institute of Pasific Realtions , 1945
Buku Teks
Moore, Harriet
Princeton University Press, 1945
Buku Teks
London : Pancy Lund Humpries
Majalah, Jurnal, Buletin