Dunn, G. Graham
Oxford University Press, 1989
Buku Teks
Milton, Janet Susan
McGraw-Hill , 2013
Buku Teks
Devore, Jay L.
Brooks/Cole, Cengage Learning , 2012
Buku Teks
Ibe, Oliver C.
Academic Press, 2014
eBooks
Milton, Janet Susan
McGraw-Hill, 2004
Buku Teks