Atkins, Ruth, author
John Wiley & Sons, 1980
Buku Teks
Atkins, Ruth, author
"John Willey ,
Buku Teks
Atkins, Ruth, author
John Wiley & Sons, 1972
Buku Teks
Ranny, Austin
Prentince-Hall, 1987
Buku Teks
W. Neil Adger, editor
Cambridge University Press, 2009
Buku Teks