The American Sociologist
New York : The American College
 Majalah, Jurnal, Buletin
Eysenck, Michael W.
Cognitive psychology : a student's handbook
Psychology Press, 1995
 Buku Referensi
Eysenck, Michael W.
Psychology : a student's handbook
Psychology Press, 2000
 Buku Referensi
Hibbison, Eric
A handbook for student writers and researchers
Prentice-Hall, 1984
 Buku Referensi
Ryan, Thomas A.
Minitab student handbook
Irene Rubin, 1976
 Buku Teks SO