Gaya APA

Krech, D, A, R. (1948). Theory and problems of social psychology, 1st ed., 4th impr. . New York: McGraw-Hill.

Gaya MLA

Krech, D.,, And, R.S.Crutchfield.. "Theory and problems of social psychology, 1st ed., 4th impr. ". New York: McGraw-Hill, 1948. Buku.