Kolstee, Hans M.
Holt, Rinehart and Winston, 1985
Buku Teks
Mott, Robert L., author
Pearson Prentice Hall, 2006
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Movnin, M.
Moscow: Mir Publishers, 1975
Buku Teks
Wilson, Charles E., author
Prentice-Hall, 1997
Buku Teks
Spotts, M.F. (Merhyle Franklin), author
Prentice-Hall, 1985
Buku Teks