| APA | PEMS. (2012, February 17). In Acronym Geek. Retrieved 00:05, February 17, 2012, from http://www.acronymgeek.com/PEMS |
| MLA | "PEMS." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/PEMS>. |
| MHRA | 'PEMS', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/PEMS> [accessed 17 February 2012] |
| Chicago | "PEMS", http://www.acronymgeek.com/PEMS (accessed February 17, 2012). |
| CBE/CSE | PEMS [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/PEMS. |
| Bluebook | PEMS, http://www.acronymgeek.com/PEMS (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PEMS, http://www.acronymgeek.com/PEMS (optional description here) (as of Feb. 17, 2012, 00:05). |
| AMA | PEMS. Acronym Geek. February 17, 2012, 00:05. Available at: http://www.acronymgeek.com/PEMS. Accessed February 17, 2012, 00:05. |