Eastman, Susan Tyler
Wadsworth, 1985
Buku Teks SO
Ahuja, B. N.
Surjeet Publications, 1990
Buku Teks SO
editor, Ahmad Suaedy
ISAI, 1999
Buku Teks SO
Beville, Hugh Malcolm
Lawrence Erlbaum Associates, 1985
Buku Teks
Carl Hausman, Fritz Messere, Philip Benoit, Lewis B. O'Donnell
Cengage Learning, 2016
Buku Teks SO