edited and introduced by Andrew Shonfield and Stella Shaw
Heinemann Educational Books, 1972
Buku Teks
edited by Eleanor Bernert Sheldon and Wilbert E. Moore
Russel Sage Foundation, 1968
Buku Teks SO
Organisation for Economic Co-operation and Development, 1986
Buku Teks
Kenneth C. Land
Springer Science, 2012
eBooks
Merryman, John Henry
Stanford Studies in Law and Development, 1979
Buku Teks SO