Peruta, Maria Rosaria Della, author
Emerald, 2016
eBooks
Daniel Moran and James A. Russell, editors.
Georgetown University Press, 2016
Buku Teks
Kopsakangas-Savolainen, Maria, author
Springer, 2012
eBooks
Levitan, Sar A., author
Harper & Row, 1982
Buku Teks
Dave Ulrich
McGraw Hil Education, 2009
Buku Teks