- 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 2014-2015 Edition
- Passkey EA Review Workbook: Six Complete IRS Enrolled Agent Practice Exams, 2014-2015 Edition
- PassKey Learning Systems EA Review Part 1 Individuals; Enrolled Agent Study Guide: May 1, 2020-February 28, 2021 Testing Cycle
- Passkey Learning Systems EA Review Part 1, Individual Taxation: Enrolled Agent Study Guide 2018-2019 Edition (Hardcover)





























