- Passkey EA Review Complete: Individuals, Businesses, and Representation: IRS Enrolled Agent Exam Study Guide 2016-2017 Edition
- Passkey EA Review, Part 1: Individuals IRS Enrolled Agent Exam Study Guide 2015-2016 Edition
- Passkey EA Review, Part 2: Businesses, IRS Enrolled Agent Exam Study Guide 2015-2016 Edition
- Passkey EA Review, Part 3: 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)






























