Whitaker, Jerry C.
New York : CRC Press, 1999,
Buku Referensi
edited by Arthur H. Seidman
McGraw-Hill, 1983
Buku Referensi
CRC Press, 2002
Buku Referensi
editors, Qipeng P. Zheng, Steffen Rebennack, Panos M. Pardalos, Mario V.F. Pereira, Niko A. Iliadis
Springer, 2012
eBooks
Stevenson, William D.
McGraw-Hill, 1982
Buku Teks