Prosser, William L., author
University of Michigan Law School, 1953
Buku Teks
Jessup, Philip C. (Philip Caryl), 1897-1986, author
University of Michigan Law School, 1959
Buku Teks
Haar, D. ter, author
Pergamon Press, 1977
Buku Teks
University of Toronto Press , 1968
Buku Teks
Viner, Jocob
The Free Press , 1952
Buku Teks