| APA | PENT. (2012, February 15). In Acronym Geek. Retrieved 06:24, February 15, 2012, from http://www.acronymgeek.com/PENT |
| MLA | "PENT." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PENT>. |
| MHRA | 'PENT', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PENT> [accessed 15 February 2012] |
| Chicago | "PENT", http://www.acronymgeek.com/PENT (accessed February 15, 2012). |
| CBE/CSE | PENT [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PENT. |
| Bluebook | PENT, http://www.acronymgeek.com/PENT (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PENT, http://www.acronymgeek.com/PENT (optional description here) (as of Feb. 15, 2012, 06:24). |
| AMA | PENT. Acronym Geek. February 15, 2012, 06:24. Available at: http://www.acronymgeek.com/PENT. Accessed February 15, 2012, 06:24. |