Gazzaniga, Michael S., author
Norton & Company, 2003
Buku Teks
Muhammad Kautsar, author
2014
UI - Skripsi (Membership)
Eisenberg, Rafael, author
Diplomatic Press, 1967
Buku Teks
Cohen, John
George Allen and Unwin Ltd., 1972
Buku Teks
Hulin, Charles L., author
Dow Jones-Irwin, 1983
Buku Teks