Laws, Dwayne
Small Business Administration, 1965
Buku Teks
Pahala Batara P.P.
2002
UI - Tesis (Membership)
Ismael Jafri
Fakultas Teknik Universitas Indonesia, 2005
UI - Tesis (Membership)
Abdurrahman Hawary
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2015
UI - Skripsi (Membership)
Hafele, Wolfgang
Hafele America, 1999
Buku Teks