Stekler, Herman O., author
Frederick A. Praeger, 1970
Buku Teks
Minkin, Barry Howard, author
Macmillan, 1995
Buku Teks
Makridakis, Spyros G., author
John Wiley & Sons, 1989
Buku Teks
Wheelwright, Steven C., author
John Wiley & Sons, 1985
Buku Teks
Wheelwright, Steven C., author
John Wiley & Sons, 1973
Buku Teks