Santini, Claudio, author
Images Publishing Group, 2009
Buku Referensi
Allan H. Legge, editor; S.V. Krupa, series editor
Elsevier , 2009
Buku Teks
Davis, Sid, author
American Management Association, 2008
eBooks
Ayuningtyas Sekarputri R., author
2017
UI - Skripsi (Membership)
Haslam, S. M. (Sylvia Mary), 1934-, author
Cambridge University Press, 2014
Buku Teks