Robins, C. Richard, author
Houghton-Miffiln, 1986
Buku Teks
Bleeker, P.
E J Brill, 1964
Buku Teks
Moller, H.
Verlag Moller-Kiel, 1983
Buku Teks
Axelrod, Herbert R., editor
Mcgraw-Hill, 1955
Buku Referensi
Kuiter, Rudie H., author
Gramedia, 1992
Buku Referensi