edited by Douglas Daymond and Leslie Monkman
Gage Educational Publishing Limited, 1978
Buku Teks
edited, B.J. Whiting .. .[et al.]
Harcourt, Brace & World, 1942
Buku Teks
edited by Lani Florian
Sage Publications, 2014
Buku Referensi
Quittner, Arnold M., author
Practising Law Institute, 1992
Buku Teks
edited by Joseph T. Shipley
Philosophical Library, 1946
Buku Referensi