Keeping, E.S., author
Van Nostrand Reinhold, 1962
Buku Teks
Kokoska, Stephen
Springer-Verlag, 1989
Buku Teks
Li, Jerome C.R., author
Edwards Brothers, 1964
Buku Teks
Wasserman, Larry, author
Springer, 2010
Buku Teks
Billingsley, Patrick, author
Allyn and Bacon, 1986
Buku Teks