| APA | PHLL. (2012, February 15). In Acronym Geek. Retrieved 05:20, February 15, 2012, from http://www.acronymgeek.com/PHLL |
| MLA | "PHLL." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PHLL>. |
| MHRA | 'PHLL', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PHLL> [accessed 15 February 2012] |
| Chicago | "PHLL", http://www.acronymgeek.com/PHLL (accessed February 15, 2012). |
| CBE/CSE | PHLL [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PHLL. |
| Bluebook | PHLL, http://www.acronymgeek.com/PHLL (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PHLL, http://www.acronymgeek.com/PHLL (optional description here) (as of Feb. 15, 2012, 05:20). |
| AMA | PHLL. Acronym Geek. February 15, 2012, 05:20. Available at: http://www.acronymgeek.com/PHLL. Accessed February 15, 2012, 05:20. |