| APA | OSPI. (2012, February 16). In Acronym Geek. Retrieved 08:14, February 16, 2012, from http://www.acronymgeek.com/OSPI |
| MLA | "OSPI." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/OSPI>. |
| MHRA | 'OSPI', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/OSPI> [accessed 16 February 2012] |
| Chicago | "OSPI", http://www.acronymgeek.com/OSPI (accessed February 16, 2012). |
| CBE/CSE | OSPI [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/OSPI. |
| Bluebook | OSPI, http://www.acronymgeek.com/OSPI (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OSPI, http://www.acronymgeek.com/OSPI (optional description here) (as of Feb. 16, 2012, 08:14). |
| AMA | OSPI. Acronym Geek. February 16, 2012, 08:14. Available at: http://www.acronymgeek.com/OSPI. Accessed February 16, 2012, 08:14. |