Boring, Edwin G., author
Appleton, 1942
Buku Teks
Goldstein, E. Bruce
Thomson Wadsworth, 2002
Buku Teks
Goldstein, E. Bruce, author
Cengage Learning, 2017
Buku Teks
Schiffman, Harvey Richard, author
John Wiley & Sons, 1982
Buku Teks
Myers, Anne, author
Wadsworth and Cengage Learning, 2012
Buku Teks