Gershenson, Harry, author
Society of Actuaries, 1961
Buku Teks
Pangestu Subagyo, author
BPFE-UGM, 1991
Buku Teks
edited by M.B. Beck and G. van Straten
Springer-Verlag, 1983
Buku Teks
Chambers, John C. (John Carlton), 1928-, author
John Wiley & Sons, 1974
Buku Teks
Makridakis, Spyros G., author
John Wiley & Sons, 1989
Buku Teks