Bell, Judith, author
McGraw-Hill Education, 2014
Buku Teks
Ellig, Jerome, 1962-author
Fla. : CRC, 2012
Buku Teks
Barker, Stephen, author
Pearson, 2012
Buku Teks
Stefan Diebels, Sergej Rjasanow, editors
Springer Nature, 2019
eBooks
Kendrick, Tom, author
American Management Association, 2006
eBooks