Anandha Sartika Putri, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2019
UI - Tesis (Membership)
George, F.H., author
Abacus Press, 1984
Buku Teks
Coates, C. Robert, author
McGraw-Hill, 1978
Buku Teks
Sianturi, Friska Uli Junita Astuty, author
2013
UI - Tesis (Membership)
Hayes, Douglas A., author
Macmillan, 1967
Buku Teks