The NEW aPHR Study Guide & Audio CD Set by Distinctive Human Resources Inc is a comprehensive resource for individuals looking to prepare for the PHR/SPHR certification exams. Published in 2015 by Distinctive Human Resources, Incorporated, the study guide features detailed content on various subjects related to human resources, authored by David Siler. This textbook is designed for adult education and further education levels, providing valuable insights in an easy-to-understand format. Additionally, the set includes an audio CD for added convenience in studying.