Peirce, Neal R.
W. W. Norton, 1983
Buku Teks
O`Neill, William L., author
Harper & Row Publishers, 1975
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Harper & Brothers, 1957
Buku Teks
Tocqueville, Alexis De, author
Oxford University Press, 1961
Buku Teks
Tocqueville, Alexis De, author
Schocken Books, 1961
Buku Teks