Rasch, Dieter, author
John Wiley & Sons, 2011
Buku Teks
Field, Andy P, author
Sage Publications, 2018
Buku Teks
Wagner, William E., author
Pine Forge Press, 2007
Buku Teks
Williams, Helen M., author
SAGE, 2020
Buku Teks
Field, Andy P, author
Sage, 2012
Buku Teks