Moore, Harriet
Princeton University Press, 1945
Buku Teks
Hubbard, G.E.
International Secretariat Institute of Pasific Relations, 1943
Buku Teks
Bisson, T.A.
International Secretariat Institute of Pasific Realtions , 1945
Buku Teks
Bisson, T.A.
Macmillan, 1945
Buku Teks SO
Griswold, Alfred Whitney, 1906-1963
Harcourt, Brace , 1938
Buku Teks SO