Williams, Helen M., author
SAGE, 2020
Buku Teks
Aron, Arthur, author
Prentice-Hall, 1997
Buku Teks
Kirkpatrick, Lee A., author
Wadsworth and Cengage Learning, 2011
Buku Teks
Field, Andy P, author
Sage Publications, 2018
Buku Teks
Field, Andy, author
Sage Publications, 2009
Buku Teks