Brace, C. Loring
Macmillan, 1969
Buku Teks
Hewitt, Paul G.
Pearson - Addison Wesley, 2008
Buku Teks
Krauskopf, Konrad B.
McGraw-HIll, 2000
Buku Teks SO
Major, Ralph H.
W.B. Saunders, 1964
Buku Referensi
Krauskopf, Konrad B.
McGraw-Hill, 2000
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