Laurene Vaughan
Bloomsbury Academic, 2017
Buku Teks
edited by Gary R. Vandenbos
Sage, 1980
Buku Teks
Corey, Gerald, author
Cengage Learning, 2017
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Gherardi, Silvia, author
Northampton, MA : Edward Elgar, 2012
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edited by Helina Melkas, Vesa Harmaakorpi
Springer, 2012
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