edited by John P. Robinson, Phillip R. Shaver, Lawrence S. Wrightsman
Academic Press, 1991
Buku Teks
Lejeue, Philippe
University of Minnesota Press, 1989
Buku Teks
Irvington Publ., 1967
Buku Teks
Cambridge University Press, 1982
eBooks
McGraw-Hill, 1957
Buku Teks