Scalise, Dagmara
American Management Association, 2009
eBooks
Marotz, Lynn R.
Wadsworth and Cengage Learning, 2013
Buku Teks SO
I Gusti Agung Ngurah Sugitha Adnyana
2016
UI - Tugas Akhir
edited by Nancy Eisenberg
John Wiley & Sons, 1987
Buku Teks
edited by Michael Lewis and Suzanne M. Miller
Plenum Press, 1990
Buku Referensi