Barrons Educational Series · LexisNexis
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Barron's Court Officer Exam, 3rd Edition | 978-1-4380-0105-0 | 2013 | Frank Lombardo |
| Barron's Police Officer Exam, 9th Edition | 978-1-4380-0133-3 | 2013 | " |
| Barron's Police Officer Exam | 978-0-7641-1662-9 | 2001 | |
| Management and Supervision of Law Enforcement Personnel | 978-1-4224-9151-5 | 2013 | Frank Lombardo |
| Management and Supervision of Law Enforcement Personnel | 978-1-4224-0437-9 | 2002 | |
D S · D. Schröder · Donald J. Schroeder · Donald J. Schroeder and Frank A. Lombardo · Donald J. Schroeder NYPD Ret. · Donald J. Schroeder Ph.D. · DONALD S · Donald Schroeder Ph.D.