Estridge, Barbara H.
Delmar Cengage Learning, 2012
Buku Teks
Sherman, Alan
Houghton Mifflin, 1976
Buku Teks
Seidman, Lisa A.
Pearson Benjamin Cummings, 2008
Buku Teks
Seidman, Lisa A.
Prentice-Hall, 2000
Buku Teks
Cunningham, Charles H.
Burgess, 1973
Buku Teks