| APA | PRTU. (2012, February 15). In Acronym Geek. Retrieved 12:21, February 15, 2012, from http://www.acronymgeek.com/PRTU |
| MLA | "PRTU." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PRTU>. |
| MHRA | 'PRTU', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PRTU> [accessed 15 February 2012] |
| Chicago | "PRTU", http://www.acronymgeek.com/PRTU (accessed February 15, 2012). |
| CBE/CSE | PRTU [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PRTU. |
| Bluebook | PRTU, http://www.acronymgeek.com/PRTU (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PRTU, http://www.acronymgeek.com/PRTU (optional description here) (as of Feb. 15, 2012, 12:21). |
| AMA | PRTU. Acronym Geek. February 15, 2012, 12:21. Available at: http://www.acronymgeek.com/PRTU. Accessed February 15, 2012, 12:21. |