Blackwell, 2007
Buku Teks
edited by John Tingle and Alan Cribb
Blackwell, 2007
Buku Teks
Fenner, M. Kathleen
D. Van Nostrand Comp., 1980
Buku Teks
Thompson, Joyce Beebe, author
Macmillan, 1981
Buku Teks
Ian E. Thompson [and others]
Elsevier, 2006
Buku Teks