I know what's wrong, but I don't know what to do about it
Goldstein, Arnold P.(Arnold Paul)
Sprafkin, Robert P.
Gershaw, N. Jane.
Englewood Cliffs London Prentice-Hall
1979
'A spectrum book'
Bibliography: p.133-134. - Includes index
ISBN 0-13-448787-7 Pbk : £2.55
Success.