edited by Reiner Horst, Panos M. Pardalos
Kluwer Academic Publishers, 1995
Buku Referensi
edited by David I. Cleland, Roland Gareis
McGraw-Hill, 1994
Buku Referensi
Routledge, 2015
eBooks
Beach, David P.
Prentice-Hall, 1992
Buku Referensi
John Sikula, senior editor ; Thomas Buttery, editor, Edith Guyton, editor
Macmillan Library Reference USA, 1996
Buku Referensi