Aronson, Mark, author
Law Book Company, 1987
Buku Teks
De Smith, S.A. (Stanley A.), author
Stevens & Sons Limited, 1980
Buku Teks
Sitorus, Lily Evelina, author
Faculty of Law University of Indonesia, 2016
Artikel Jurnal
edited by B.C. Lemke, James Don Edwards
Charles E. Merrill, 1961
Buku Teks
Britt, Steuart Henderson, author
McGraw-Hill , 1968
Buku Teks