International Standard Book Numbers

The ISBN for APA’s 2019 Payroll Source Plus is 978-1-944301-33-0.

The ISBN for APA’s 2019 The Payroll Source® Online is 978-1-944301-40-8.

The ISBN for APA’s 2020 edition of APA’s Guide to Local Payroll Taxes is 978-1-944301-44-6.

The ISBN for APA’s 2019 edition of APA’s Guide to Federal and State Garnishment Laws is 978-1-944301-41-5.

The ISBN for APA’s 2019 edition of APA’s Guide to Federal and State Wage & Hour Laws is 978-1-944301-42-2.