edited by David Collier
Princeton University Press, 1979
Buku Teks
Pierson, William W., author
D. Van Nostrand, 1953
Buku Teks
Stuart, Graham H. (Graham Henry), 1887-, author
Appleton-Century-Crofts, 1955
Buku Teks
Gordon, Lincoln, author
Harvard University Press, 1963
Buku Teks
Berle, Adolf A., Jr., author
Harper & Row, [1962]
Buku Teks