Stevens, James
Lawrence Erlbaum Associates, 1986
Buku Teks
Gelbaum, Bernard R.
W.B. Saunders, 1969
Buku Teks
Corty, Eric W.
Mosby Elsevier, 2007
Buku Teks
Siegel, Sidney
McGraw-Hill , 1988
Buku Teks
Howell, David C.
Thomson Higher Education, 2004
Buku Teks