Taha, Hamdy A., author
Prentice-Hall, 1997
Buku Teks
Gillett, Billy E., author
Tata McGraw-Hill , 1994
Buku Teks
Churchman, Charles West, 1913-, author
Wiley, 1957
Buku Teks
Gupta
S.CHAND & COMPANY LTD., 1979
Buku Teks
Pangestu Subagyo, author
BPFE-UGM, 1989
Buku Teks