Free Press, 1978
Buku Teks
Robinson, James Harvey, 1863-1936, author
Harper, 1930
Buku Teks
Scarpitti, Frank R., author
Holt, Rinehart and Winston, 1974
Buku Teks
Merton, Robert K., author
Harcourt Brace Jovanovich, 1976
Buku Teks
Brown, Martin, author
Free Press, 1971
Buku Teks