edited by Keith Banister, Andrew Campbell
Grolier International, 1993
Buku Referensi
Stafford, J.
New York Harcourt, Brace and Company 1944
Buku Teks
Indonesia. Lembaga Kebudayaan Maluku
Lembaga Kebudayaan Maluku, 2010
Buku Referensi
Wilson, John Dover, 1881-1959
Brooklyn, N.Y. :Haskell House Publisher, 1977,
Buku Teks
Ulmer, Donna K.
South-Western College Publishing, 1997
Buku Teks