Berghe,Pirre Van Den
Basic Books Inc Publishers, 1970
Buku Teks
Montagu, Ashley, 1905-1999, author
The World Publishing, 1964
Buku Teks
Blalock, Hubert M., author
Prentice-Hall, 1982
Buku Teks
Brown, Ina Corinne
Prentice-Hall, 1973
Buku Teks
Kitano, Harry H.L.
Prentice-Hall, 1974
Buku Teks