Sonntag, Richard E., author
John Wiley & Sons, 1991
Buku Teks
Dixon, Wilfrid J. (Wilfrid Joseph), author
McGraw-Hill, 1983
Buku Teks
Stowe, Keith S., 1943-, author
Cambridge university press, 2007
Buku Teks
Hoel, Paul Gerhard, 1905-, author
Hughton Mifflin, 1971
Buku Teks
Engel, Thomas, author
Prentice-Hall, 2010
Buku Teks