The Free Press, 1972
Buku Teks
edited by Kristine L. Fitch, Robert E. Sanders
Lawrence Erlbaum Associates, 2005
Buku Teks
Miftahul Khairunnisa, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2015
UI - Skripsi Membership
Prentice-Hall, [1971]
Buku Teks
Rutter, Derek, author
John Wiley & Sons, 1984
Buku Teks