Goldthorpe, J. E., author
Cambridge University PRess, 1975
Buku Teks
Layder, Derek
Sage, 1994
Buku Teks
Himes, Joseph S.
Scott, Foresman and Company , 1968
Buku Teks
Goode, William J.
Tata McGraw-Hill, 1977
Buku Teks
Schaefer, Richard T, author
McGraw-Hill, 2009
Buku Teks