Stanley, William D., author
Reston Publishing, 1984
Buku Teks
Salivahanan, S., author
Tata McGraw-Hill, 2011
Buku Teks
Oppenheim, Alan V., author
Prentice Hall of India, 1997
Buku Teks
Kuc, Roman, author
McGraw-Hill, 1988
Buku Teks
Vasudevan, Kasturi
Universities Press, 2007
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