Penny Febriana, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2013
UI - Skripsi (Membership)
Stephen A.Ross
Mc Graw Hill, 2009
Buku Teks
by Arthur J. Keown, John D. Martin, J. William Petty, David F. Scott
Prentice-Hall, 2001
Buku Teks
Madura, Jeff, author
Thomson South-Western, 2003
Buku Teks
Block, Stanley B., author
McGraw-Hill, 2002
Buku Teks