Rohatgi, V.K., author
John Wiley & Sons, 1976
Buku Teks
Keyfitz, Nathan, author
John Wiley & Sons, 1977
Buku Teks
Summer, George W.
Wadsworth, 1985
Buku Teks
Barlow, Richard E., author
Society for Industrial and Applied Mathematics, 1996
eBooks
Baglivo, Jenny A., author
Society for Industrial and Applied Mathematics, 2005
eBooks