Ewing, David W., author
McGraw-Hill, 1978
Buku Teks
Abraham, Henry J., author
Oxford University Press, 1988
Buku Teks
Rule, James B., author
University of California Press, 1988
Buku Teks
Bonnicksen, Andrea L
Mayfield Publishing Company, 1982
Buku Teks
Foster, Steve, author
Oxford university press, 2012
Buku Teks