Artikel Jurnal
Muhammad Kurniadi, author
Universitas Indonesia, 2011
UI - Skripsi Open
Bierman, Harold, author
McGraw-Hill , 1963
Buku Teks
Dadat Sunardi, author
1986
UI - Skripsi Membership
Dwinita Yulvianti, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2014
UI - Skripsi Membership