Jeston, John, author
Routledge, 2014
Buku Teks
Calkins, Richard M., author
Dow Jones-Irwin, 1981
Buku Teks
by Curtis E. Tate Jr. ... [and others]
Business Publication, 1982
Buku Teks
Dersal, William R. Van
Harper & Brother, 1962
Buku Teks
Forsyth, Patrick, author
Institution of Engineering and Technology, 2008
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