| APA | SPOJ. (2012, February 16). In Acronym Geek. Retrieved 02:15, February 16, 2012, from http://www.acronymgeek.com/SPOJ |
| MLA | "SPOJ." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/SPOJ>. |
| MHRA | 'SPOJ', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/SPOJ> [accessed 16 February 2012] |
| Chicago | "SPOJ", http://www.acronymgeek.com/SPOJ (accessed February 16, 2012). |
| CBE/CSE | SPOJ [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/SPOJ. |
| Bluebook | SPOJ, http://www.acronymgeek.com/SPOJ (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPOJ, http://www.acronymgeek.com/SPOJ (optional description here) (as of Feb. 16, 2012, 02:15). |
| AMA | SPOJ. Acronym Geek. February 16, 2012, 02:15. Available at: http://www.acronymgeek.com/SPOJ. Accessed February 16, 2012, 02:15. |