American Payroll Association · American Payroll Institute, Inc.
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Payroll Practice Fundamentals | 978-1-930471-51-1 | 2004 | Michael P. O'Toole |
| The Payroll Source | 978-1-934951-81-1 | 2015 | Michael P. O'Toole · Esq. |
| The Payroll Source | 978-1-934951-26-2 | 2010 | Michael P. O'Toole · Esq. |
| The Payroll Source | 978-1-934951-12-5 | 2009 | Michael P. O'Toole |
| The Payroll Source | 978-1-930471-04-7 | 2000 | " |
M. O. · M.P. · M. T. · Michael O'Toole · Michael P. · Michael P. O. · Michael T · O T · O'Toole · P T