edited by Mubeccel B. Kiray
Mouton, 1973
Buku Teks
Tumin, Melvin M., author
Prentice-Hall, 1967
Buku Teks
Suyono Yahya, author
Depkes. RI, 1982
Buku Teks
Horowitz, Irving Louis, author
Oxford University Press, 1972
Buku Teks
Matras, Judah
Prentice-Hall, 1975
Buku Teks