Feldman, Robert S., author
Salemba Empat, 2012
Buku Teks
Baron, Robert A., author
Erlangga, 2004
Buku Teks
Chaplin, J. P., author
RajaGrafindo Persada, 2006
Buku Referensi
Chaplin, J.P., author
Rajawali, 2011
Buku Referensi
Shaw, Marvin E., author
Rajawali, 2011
Buku Teks