Barrdell, Ross H., author
Addison-Wesley, 1953
Buku Teks
Beckenbach, Edwin F., author
Wadsworth, 1964
Buku Teks
Smith, Karl J., author
Brooks/Cole, 1985
Buku Teks
King, G. Brooks, author
American Book Company, 1963
Buku Teks
Novita, author
2014
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