Howitt, Dennis, author
Routledge, 2000
Buku Teks
Howitt, Dennis, author
Routledge , 2000
Buku Teks
Grove, Susan K., author
Saunders Elsevier, 2007
Buku Teks
Zechmeister, Eugene B., author
McGraw-Hill, 1992
Buku Teks
edited by Jonathan A. Smith
SAGE, 2015
Buku Teks