Dubin, Robert, author
Prentice-Hall, 1968
Buku Teks
Crow, Lester D
Macmillan, 1964
Buku Teks
Dubin, Robert, author
Prentice Hall of India, 1977
Buku Teks
Halloran, Jack, 1931-, author
Prentice-Hall, 1978
Buku Teks
Crow, Lester D
Macmillan, 1964
Buku Teks