The publications listed below provide useful information, frameworks and techniques

• Introducing Systems Development, by Steve Skidmore and Malcolm Eva (Palgrave)
  (ISBN 0333973690)
• Systems Analysis and Design, by Donald Yeates and Tony Wakefield (Pearson Education)
• Business Analysis Techniques: 72 Essential Tools for Success, by James Cadle, Debra Paul and Paul Turner (British Computer Society)
  (ISBN 190612423X)
• Mastering the Requirements Process, by Suzanne Robertson and James Robertson (Addison Wesley)
  (ISBN 0201360462)