| APA | ZPS. (2012, February 14). In Acronym Geek. Retrieved 09:12, February 14, 2012, from http://www.acronymgeek.com/ZPS |
| MLA | "ZPS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/ZPS>. |
| MHRA | 'ZPS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/ZPS> [accessed 14 February 2012] |
| Chicago | "ZPS", http://www.acronymgeek.com/ZPS (accessed February 14, 2012). |
| CBE/CSE | ZPS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/ZPS. |
| Bluebook | ZPS, http://www.acronymgeek.com/ZPS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZPS, http://www.acronymgeek.com/ZPS (optional description here) (as of Feb. 14, 2012, 09:12). |
| AMA | ZPS. Acronym Geek. February 14, 2012, 09:12. Available at: http://www.acronymgeek.com/ZPS. Accessed February 14, 2012, 09:12. |