APA Style
      Campbell, Wallace H. (1997).
    Introduction to Geomagnetic Fields .
    United States of America:
  Cambridge University Press.
  
Chicago Style
      Campbell, Wallace H.
    Introduction to Geomagnetic Fields.
    
    United States of America:
  Cambridge University Press,
  1997.
  Text.
  
MLA Style
      Campbell, Wallace H.
    Introduction to Geomagnetic Fields.
    
    United States of America:
  Cambridge University Press,
  1997.
  Text.
  
Turabian Style
      Campbell, Wallace H.
    Introduction to Geomagnetic Fields.
     
    United States of America:
  Cambridge University Press,
  1997.
  Print.