| APA | Smart Define. (-0001). billable hours thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/billable_hours/thesaurus/related |
| Chicago | Smart Define. -0001. "billable hours thesaurus" https://smartdefine.org/billable_hours/thesaurus/related (accessed September 21, 2026). |
| Harvard | Smart Define -0001, billable hours thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/billable_hours/thesaurus/related>. |
| MLA | Smart Define. "billable hours thesaurus" 30 November -0001. Web. 21 September 2026. <https://smartdefine.org/billable_hours/thesaurus/related> |