| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Building Service Contracting: How to Start, Promote, and Manage a Cleaning Maintenance Janitorial Service Business, | 978-0-9678303-0-8 (0-9678303-0-3) | 2008 |
| Sales and Marketing for Janitorial Service Businesses: Strategies for Promoting, Estimating, and Bidding Cleaning Services | 978-0-9678303-2-2 (0-9678303-2-X) | 2000 |
| The Science of Professional Cleaning: Handbook for Janitorial Services | 978-0-9678303-3-9 (0-9678303-3-8) | 2000 |