Waddams, A. Lawrence
The English Language Boook Society and John Murray, , 1968"
Buku Teks
Kuno, Masaru, author
Garland Science, 2012
Buku Teks
Acuff, F. Gene, author
The Dryden Press, 1973
Buku Teks
Owen, Terence C.
Marcel Dekker, 1969
Buku Teks
Sanders, Roy E., author
Elsevier Butterworth Heinemann, 2005
Buku Teks