Cardozo, Benjamin N.
Yale University Press, 1978
Buku Teks
Mendelson, Wallace
Dorsey Press, 1980
Buku Teks
Schubert, Glendon
Scott, Foresman, 1965
Buku Teks
edited by Glendon Schubert
Free Press, 1963
Buku Teks
Cooper, Phillip J.
Oxford University Press , 1988
Buku Teks