Makridakis, Spyros G., author
John Wiley & Sons, 1989
Buku Teks
Wadsworth, 1962
Buku Teks
Pangestu Subagyo, author
BPFE-UGM, 2009
Buku Teks
edited by Kenneth D. Lawrence, Ronald K. Klimberg
Emerald, 2016
eBooks
Wheelwright, Steven C., author
John Wiley & Sons, 1973
Buku Teks