International Standard Book Numbers

The ISBN for APA’s 2021 Payroll Source Plus is 978-1-944301-59-0.

The ISBN for APA’s 2021 The Payroll Source® Online is 978-1-944301-60-6.

The ISBN for APA’s 2021 edition of APA’s Guide to Local Payroll Taxes is 978-1-944301-57-6.

The ISBN for APA’s 2021 edition of APA’s Guide to Federal and State Garnishment Laws is 978-1-944301-67-5.

The ISBN for APA’s 2021 edition of APA’s Guide to Federal and State Wage & Hour Laws is 978-1-944301-69-9.

The ISBN for APA’s 2021 edition of Payroll Practice Fundamentals is 978-1-944301-62-0.

The ISBN for APA’s 2020 Payroll Source Plus is 978-1-944301-45-3.

The ISBN for APA’s 2020 The Payroll Source® Online is 978-1-944301-46-0.