Ferguson, J. H., & Mchenry, D. E. (1967). The American system of government. New York: McGraw-Hill.
Čikaški stil citiranjaFerguson, John H., i Dean E. Mchenry. The American System of Government. New York: McGraw-Hill, 1967.
MLA način citiranjaFerguson, John H., i Dean E. Mchenry. The American System of Government. New York: McGraw-Hill, 1967.
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