Steward, Julian H., author
Social Science Research Council, 1950
Buku Teks
Pervin, Lawrence A., author
New York, 1997
Buku Teks
Vito, Gennaro F., author
Wadsworth, 1994
Buku Teks
Petri, Herbert L, author
Cengage Learning, 2013
Buku Teks
David Rosenhan, Perry London
Halt, Rinehart and Winston, 1969
Buku Teks