| APA | PEP. (2012, February 14). In Acronym Geek. Retrieved 19:29, February 14, 2012, from http://www.acronymgeek.com/PEP |
| MLA | "PEP." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PEP>. |
| MHRA | 'PEP', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PEP> [accessed 14 February 2012] |
| Chicago | "PEP", http://www.acronymgeek.com/PEP (accessed February 14, 2012). |
| CBE/CSE | PEP [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PEP. |
| Bluebook | PEP, http://www.acronymgeek.com/PEP (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PEP, http://www.acronymgeek.com/PEP (optional description here) (as of Feb. 14, 2012, 19:29). |
| AMA | PEP. Acronym Geek. February 14, 2012, 19:29. Available at: http://www.acronymgeek.com/PEP. Accessed February 14, 2012, 19:29. |