| APA | USPS. (2012, February 9). In Acronym Geek. Retrieved 00:35, February 9, 2012, from http://www.acronymgeek.com/USPS |
| MLA | "USPS." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/USPS>. |
| MHRA | 'USPS', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/USPS> [accessed 9 February 2012] |
| Chicago | "USPS", http://www.acronymgeek.com/USPS (accessed February 9, 2012). |
| CBE/CSE | USPS [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/USPS. |
| Bluebook | USPS, http://www.acronymgeek.com/USPS (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, USPS, http://www.acronymgeek.com/USPS (optional description here) (as of Feb. 9, 2012, 00:35). |
| AMA | USPS. Acronym Geek. February 9, 2012, 00:35. Available at: http://www.acronymgeek.com/USPS. Accessed February 9, 2012, 00:35. |