- PassKey Learning Systems EA Review Part 1 Workbook: Three Complete IRS Enrolled Agent Practice Exams for Individuals:
- Passkey EA Review, Complete: Individuals, Businesses, and Representation: IRS Enrolled Agent Exam Study Guide 2017-2018 Edition
- Passkey EA Review Complete: Individuals, Businesses, and Representation: IRS Enrolled Agent Exam Study Guide 2016-2017 Edition
- Passkey Learning Systems EA Review Complete: Individuals, Businesses, and Representation: Enrolled Agent Exam Study Guide 2018-2019 Edition (Hardcover)
- Passkey Learning Systems EA Review, Part 2 Businesses; Enrolled Agent Study Guide: July 1, 2019-February 29, 2020 Testing Cycle





























