| APA | PLL. (2012, February 14). In Acronym Geek. Retrieved 11:57, February 14, 2012, from http://www.acronymgeek.com/PLL |
| MLA | "PLL." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PLL>. |
| MHRA | 'PLL', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PLL> [accessed 14 February 2012] |
| Chicago | "PLL", http://www.acronymgeek.com/PLL (accessed February 14, 2012). |
| CBE/CSE | PLL [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PLL. |
| Bluebook | PLL, http://www.acronymgeek.com/PLL (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PLL, http://www.acronymgeek.com/PLL (optional description here) (as of Feb. 14, 2012, 11:57). |
| AMA | PLL. Acronym Geek. February 14, 2012, 11:57. Available at: http://www.acronymgeek.com/PLL. Accessed February 14, 2012, 11:57. |