| APA | PCYO. (2012, February 11). In Acronym Geek. Retrieved 23:38, February 11, 2012, from http://www.acronymgeek.com/PCYO |
| MLA | "PCYO." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/PCYO>. |
| MHRA | 'PCYO', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/PCYO> [accessed 11 February 2012] |
| Chicago | "PCYO", http://www.acronymgeek.com/PCYO (accessed February 11, 2012). |
| CBE/CSE | PCYO [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/PCYO. |
| Bluebook | PCYO, http://www.acronymgeek.com/PCYO (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PCYO, http://www.acronymgeek.com/PCYO (optional description here) (as of Feb. 11, 2012, 23:38). |
| AMA | PCYO. Acronym Geek. February 11, 2012, 23:38. Available at: http://www.acronymgeek.com/PCYO. Accessed February 11, 2012, 23:38. |