| APA | P&E. (2012, February 9). In Acronym Geek. Retrieved 14:47, February 9, 2012, from http://www.acronymgeek.com/P&E |
| MLA | "P&E." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/P&E>. |
| MHRA | 'P&E', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/P&E> [accessed 9 February 2012] |
| Chicago | "P&E", http://www.acronymgeek.com/P&E (accessed February 9, 2012). |
| CBE/CSE | P&E [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/P&E. |
| Bluebook | P&E, http://www.acronymgeek.com/P&E (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, P&E, http://www.acronymgeek.com/P&E (optional description here) (as of Feb. 9, 2012, 14:47). |
| AMA | P&E. Acronym Geek. February 9, 2012, 14:47. Available at: http://www.acronymgeek.com/P&E. Accessed February 9, 2012, 14:47. |