Ferrell, O.C., author
Cengage Learning, 2015
Buku Teks
Muhammad Iqbal, author
Fakultas Pascasarjana, 2014
UI - Tesis Membership
Veatch, Robert M., author
Oxford University Press, 2015
Buku Teks
Kevin Joel Anthony, author
2018
UI - Skripsi Membership
Ziegler, Raymond J.
Appleton-Century-Crofts, 1966
Buku Teks