Crang, Mike, author
Routledge, 1998
Buku Teks
Bennison, George M. (George Mills), author
Routledge, 2013
Buku Teks
Getis, Arthur, author
McGraw-Hill Higher Education, 2009
Buku Teks
Kendall, Henry M., author
Harcourt, Brace & World, 1962
Buku Teks
Arthur Getis, Judith Getis, Mark D. Bjelland, Jerome D. Fellmann
McGraw-Hill, 2011
Buku Teks