Presser, Stephen B., author
Thomson/West, 2010
Buku Teks
Boies, David
Little,Brown and Company, 1977
Buku Teks
Irving, W Washington
Boston [etc.] Houghton Mifflin [1922]
Buku Teks
Redmond, Peter W.D., author
The M & E Handbook Series, 1993
Buku Teks
Boies, David.
Little, Brown, 1977
Buku Teks