editor by. Brian L. Cutler
Sage, 2008
Buku Referensi
Fersch, Ellsworth A.
Charles C. Thomas, 1979
Buku Teks
Csikszentmihalyi, Mihaly, author
Springer, 2014
Buku Teks
Khan MDS, imran Mohammed, author
Lambert Academic, 2013
Buku Teks
Panagiotis Kanellis ...[et al.]
Idea Group Publishing, 2006
Buku Teks