Daintith, Terence
Integration Through Law Europe and the American FederalExperience
Walter de Gruyter, 1987
 Buku Teks
Ross, Stephen F.
Principles of antitrust law / Stephen F. Ross
The Foundation Press, 1993
 Buku Teks
Williams, Ethel L.
The Howard University bibliography of African and Afro-American religious studies : with locations in American libraries / compiled by Ethel L. Williams and Clifton F. Brown
Scholarly Resources Press, 1977
 Buku Referensi
Williams, Stephen
Outdoor recreation and the urban environment / Stephen Williams
Routledge , 1995
 Buku Teks
Williams, Stephen F.
The natural gas revolution of 1985 / William Stephen F.
American Enterprise Institute for Public Policy Research, 1985
 Buku Teks