Donnell, John D., author
Richard D. Irwin, 1983
Buku Teks
Marsh, S.B., author
MCGraw-Hill, 1995
Buku Teks
Simpson, Laurence P., author
Alexander Hamilton Institute, 1961
Buku Teks
Siti Hediyanti Elsani Yosrizal, author
Fakultas Hukum Universitas Indonesia, 2018
UI - Skripsi Membership
Ferran, Eilis, author
United Kingdom Oxford University Press, 2014
Buku Teks