Hansen, Karen
John Wiley & Sons, 2011
Buku Teks
Vazirani, V.N.
Khana Publishers, 1980
Buku Referensi
W.F. Chen, editor-in-chief
CRC Press, 2000
Buku Referensi
Merritt, Frederick S.
McGraw-Hill, 1995
Buku Referensi
Heisler, Sanford I
John Wiley & Sons, 1984
Buku Referensi