| APA | USP. (2012, February 4). In Acronym Geek. Retrieved 11:49, February 4, 2012, from http://www.acronymgeek.com/USP |
| MLA | "USP." Acronym Geek. (2012). Acronym Geek. 4 Feb 2012 <http://www.acronymgeek.com/USP>. |
| MHRA | 'USP', Acronym Geek, 4 February 2012, <http://www.acronymgeek.com/USP> [accessed 4 February 2012] |
| Chicago | "USP", http://www.acronymgeek.com/USP (accessed February 4, 2012). |
| CBE/CSE | USP [Internet]. Acronym Geek; 2012 Feb 4 [cited 2012 Feb 4]. Available from: http://www.acronymgeek.com/USP. |
| Bluebook | USP, http://www.acronymgeek.com/USP (last visited February 4, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, USP, http://www.acronymgeek.com/USP (optional description here) (as of Feb. 4, 2012, 11:49). |
| AMA | USP. Acronym Geek. February 4, 2012, 11:49. Available at: http://www.acronymgeek.com/USP. Accessed February 4, 2012, 11:49. |