Abu Ahmadi
Rineka Cipta, 1998
Buku Teks
Atkinson, Rita L.
Erlangga , 1999
Buku Teks SO
Feldman, Robert Stephen, 1947-
McGraw-Hill , 1992
Buku Teks SO
Feldman, Robert Stephen, 1947-
McGraw-Hill , 1993
Buku Teks SO
Rita L. Atkinson ... [et al.]
Harcourt Brace College, 1993
Buku Teks SO