| APA | CPYS. (2012, February 17). In Acronym Geek. Retrieved 01:53, February 17, 2012, from http://www.acronymgeek.com/CPYS |
| MLA | "CPYS." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/CPYS>. |
| MHRA | 'CPYS', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/CPYS> [accessed 17 February 2012] |
| Chicago | "CPYS", http://www.acronymgeek.com/CPYS (accessed February 17, 2012). |
| CBE/CSE | CPYS [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/CPYS. |
| Bluebook | CPYS, http://www.acronymgeek.com/CPYS (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CPYS, http://www.acronymgeek.com/CPYS (optional description here) (as of Feb. 17, 2012, 01:53). |
| AMA | CPYS. Acronym Geek. February 17, 2012, 01:53. Available at: http://www.acronymgeek.com/CPYS. Accessed February 17, 2012, 01:53. |