| APA | CPYD. (2012, February 17). In Acronym Geek. Retrieved 03:22, February 17, 2012, from http://www.acronymgeek.com/CPYD |
| MLA | "CPYD." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/CPYD>. |
| MHRA | 'CPYD', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/CPYD> [accessed 17 February 2012] |
| Chicago | "CPYD", http://www.acronymgeek.com/CPYD (accessed February 17, 2012). |
| CBE/CSE | CPYD [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/CPYD. |
| Bluebook | CPYD, http://www.acronymgeek.com/CPYD (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CPYD, http://www.acronymgeek.com/CPYD (optional description here) (as of Feb. 17, 2012, 03:22). |
| AMA | CPYD. Acronym Geek. February 17, 2012, 03:22. Available at: http://www.acronymgeek.com/CPYD. Accessed February 17, 2012, 03:22. |