Goldman, Jeremy, author
[American Management Association, ], 2013
eBooks
Kerpen, Dave, author
McGraw-Hill, 2011
Buku Teks
Macy, Beverly, author
McGraw-Hill, 2011
Buku Teks
Hanani Faiza, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2013
UI - Skripsi (Membership)
Martin Kusuma Yuda, author
2017
UI - Skripsi (Membership)