VanderMey, Randal, author
Wadsworth and Cengage Learning, 2012
Buku Teks
Mcmahan, Elizabeth
McGraw-Hill, 1984
Buku Teks
Babbie, Earl R.
Thomson/Wadsworth, 2004
Multimedia
Babbie, Earl R.
Thomson/Wadsworth, 2004
Multimedia
Higham, Nicholas J., author
Society for Industrial and Applied Mathematics (SIAM), 1993
Buku Referensi