edited by Alfred D. Chandler
Harcourt, Brace, 1964
Buku Teks
Phillips, Charles F.
University of North Carolina , 1963
Buku Teks
Fisher, Waldo E.
Princeton University Press, 1955
Buku Teks
Bloom, Gordon F.
M.I.T. Press , 1972
Buku Teks SO
Yates, Brock
Empire Books, 1983
Buku Teks