- aPHR Associate Professional in Human Resources Certification All-in-One Exam Guide
- PHR/SPHR Professional in Human Resources Certification All-in-One Exam Guide
- aPHR Associate Professional in Human Resources Certification All-In-One Exam Guide
- Phr/Sphr Professional in Human Resources Certification All-In-One Exam Guide, Second Edition
- Secrets of Affirmative Action Compliance