Clarke, George Timothy
New York University, 1959
Buku Teks
Burton, Philip Ward, 1910-, author
Grid Publishing, 1978
Buku Teks
Burton, Philip Ward, 1910-, author
NTC Business Book, 1991
Buku Teks
Schwab, Victor O
Wilshire Book Company, 1962
Buku Teks
Sheila Puspitasari Latala, author
Fakultas Hukum Universitas Indonesia, 2022
UI - Tesis (Membership)