| APA | PUTL. (2012, February 17). In Acronym Geek. Retrieved 06:44, February 17, 2012, from http://www.acronymgeek.com/PUTL |
| MLA | "PUTL." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/PUTL>. |
| MHRA | 'PUTL', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/PUTL> [accessed 17 February 2012] |
| Chicago | "PUTL", http://www.acronymgeek.com/PUTL (accessed February 17, 2012). |
| CBE/CSE | PUTL [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/PUTL. |
| Bluebook | PUTL, http://www.acronymgeek.com/PUTL (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PUTL, http://www.acronymgeek.com/PUTL (optional description here) (as of Feb. 17, 2012, 06:44). |
| AMA | PUTL. Acronym Geek. February 17, 2012, 06:44. Available at: http://www.acronymgeek.com/PUTL. Accessed February 17, 2012, 06:44. |