| APA | SPP1. (2012, February 11). In Acronym Geek. Retrieved 22:12, February 11, 2012, from http://www.acronymgeek.com/SPP1 |
| MLA | "SPP1." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/SPP1>. |
| MHRA | 'SPP1', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/SPP1> [accessed 11 February 2012] |
| Chicago | "SPP1", http://www.acronymgeek.com/SPP1 (accessed February 11, 2012). |
| CBE/CSE | SPP1 [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/SPP1. |
| Bluebook | SPP1, http://www.acronymgeek.com/SPP1 (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPP1, http://www.acronymgeek.com/SPP1 (optional description here) (as of Feb. 11, 2012, 22:12). |
| AMA | SPP1. Acronym Geek. February 11, 2012, 22:12. Available at: http://www.acronymgeek.com/SPP1. Accessed February 11, 2012, 22:12. |