Wilcox, Rand R., author
Oxford University Press, 2009
Buku Teks
Alexander, Renee R., author
Wiley-Liss, 1992
Buku Teks
Lorie, James H., author
NMcGraw-Hill , 1951
Buku Teks
Powell, Ronald R., author
Libraries Unlimited, Inc., 2004
Buku Teks
Powell, Ronald R., author
Greenwich Ablex Publishing Corporation , 1999
Buku Teks