| APA | SPZ. (2012, February 14). In Acronym Geek. Retrieved 06:31, February 14, 2012, from http://www.acronymgeek.com/SPZ |
| MLA | "SPZ." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/SPZ>. |
| MHRA | 'SPZ', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/SPZ> [accessed 14 February 2012] |
| Chicago | "SPZ", http://www.acronymgeek.com/SPZ (accessed February 14, 2012). |
| CBE/CSE | SPZ [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/SPZ. |
| Bluebook | SPZ, http://www.acronymgeek.com/SPZ (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPZ, http://www.acronymgeek.com/SPZ (optional description here) (as of Feb. 14, 2012, 06:31). |
| AMA | SPZ. Acronym Geek. February 14, 2012, 06:31. Available at: http://www.acronymgeek.com/SPZ. Accessed February 14, 2012, 06:31. |