| APA | PORIN. (2012, February 12). In Acronym Geek. Retrieved 12:07, February 12, 2012, from http://www.acronymgeek.com/PORIN |
| MLA | "PORIN." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/PORIN>. |
| MHRA | 'PORIN', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/PORIN> [accessed 12 February 2012] |
| Chicago | "PORIN", http://www.acronymgeek.com/PORIN (accessed February 12, 2012). |
| CBE/CSE | PORIN [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/PORIN. |
| Bluebook | PORIN, http://www.acronymgeek.com/PORIN (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PORIN, http://www.acronymgeek.com/PORIN (optional description here) (as of Feb. 12, 2012, 12:07). |
| AMA | PORIN. Acronym Geek. February 12, 2012, 12:07. Available at: http://www.acronymgeek.com/PORIN. Accessed February 12, 2012, 12:07. |