APHR Associate Professional in Human Resources Certification All-In-One Exam Guide, Second EditionChristina Nishiyama, Dory Willer, William H. Truesdell, William D. Kelly · First published 2022Open the Tome
PHR/SPHR Professional in Human Resources Certification All-In-One Exam Guide, Second EditionChristina Nishiyama, Dory Willer, William H. Truesdell · First published 2019Open the Tome
