Latz, Gil
John Wiley & Sons, 1996
Buku Referensi
Mackinnon, Danny
Pearson, Prentice Hall, 2007
Buku Teks
Mackinnon, Danny
Routledge, 2019
Buku Teks
Getis, Arthur
McGraw-Hill Higher Education, 2009
Buku Teks
Kendall, Henry M.
Harcourt, Brace, 1958
Buku Teks