| APA | PUTU. (2012, February 17). In Acronym Geek. Retrieved 00:41, February 17, 2012, from http://www.acronymgeek.com/PUTU |
| MLA | "PUTU." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/PUTU>. |
| MHRA | 'PUTU', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/PUTU> [accessed 17 February 2012] |
| Chicago | "PUTU", http://www.acronymgeek.com/PUTU (accessed February 17, 2012). |
| CBE/CSE | PUTU [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/PUTU. |
| Bluebook | PUTU, http://www.acronymgeek.com/PUTU (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PUTU, http://www.acronymgeek.com/PUTU (optional description here) (as of Feb. 17, 2012, 00:41). |
| AMA | PUTU. Acronym Geek. February 17, 2012, 00:41. Available at: http://www.acronymgeek.com/PUTU. Accessed February 17, 2012, 00:41. |