Essays in legal philosophy / selected and edited by Robert S. Summers
Basil Blackwell, 1970
Buku Teks SO
White, James J.
Uniform commercial code / by James J. White and Robert S. Summers
West Group, 1995
Buku Teks
Summers, George W.
Basic statistics in business and economics / George Summers, William S. Peters
Wadsworth, 1973
Buku Teks SO
White, James J.
Uniform commercial code / James J. White; Robert S. Summers
West Publishing Company, 1995
Buku Teks
White, James J.
Uniform commercial code / James J. White; Robert S. Summers
West Publishing Company, 1988
Buku Teks