Emma Beare, editor
Bounty Books, 2013
Buku Referensi
Carnevale, Anthony P.
Dept. of Education, Office Educational Research and Improvement , 1994
Buku Teks
H. Djaali, author
Kemitraaan Partnership, 2003
Buku Teks
Hocleitner, Ricardo Diez
UNESCO, 1978
Buku Teks
Harvard Business Review Press, 2013
Buku Teks