| APA | PLY. (2012, February 14). In Acronym Geek. Retrieved 19:13, February 14, 2012, from http://www.acronymgeek.com/PLY |
| MLA | "PLY." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PLY>. |
| MHRA | 'PLY', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PLY> [accessed 14 February 2012] |
| Chicago | "PLY", http://www.acronymgeek.com/PLY (accessed February 14, 2012). |
| CBE/CSE | PLY [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PLY. |
| Bluebook | PLY, http://www.acronymgeek.com/PLY (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PLY, http://www.acronymgeek.com/PLY (optional description here) (as of Feb. 14, 2012, 19:13). |
| AMA | PLY. Acronym Geek. February 14, 2012, 19:13. Available at: http://www.acronymgeek.com/PLY. Accessed February 14, 2012, 19:13. |