Cook, Marshall J. ,author
McGraw-Hill, 2011
Buku Teks
Moore, Robert Hamilton, author
Holt, Rinehart and Winston, 1959
Buku Teks
Blainey, Geoffrey, 1930-, author
Sun Books, 1980
Buku Teks
edited by Michael Grahame Moore, William G. Anderson
Lawrence Erlbaum Associates, 2003
Buku Teks
edited by Friedrich Kragler, Martin Hulskamp
Springer, 2012
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