Cita APA

 Phillips, B. (2009).  Locksmith and security professionals’ exam study guide.  McGraw-Hill.

Citación estilo Chicago

 Phillips, Bill.  Locksmith and Security Professionals’ Exam Study Guide.  McGraw-Hill, 2009.

Cita MLA

 Phillips, Bill.  Locksmith and Security Professionals’ Exam Study Guide.  McGraw-Hill, 2009.