| APA | PCNO. (2012, February 17). In Acronym Geek. Retrieved 00:23, February 17, 2012, from http://www.acronymgeek.com/PCNO |
| MLA | "PCNO." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/PCNO>. |
| MHRA | 'PCNO', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/PCNO> [accessed 17 February 2012] |
| Chicago | "PCNO", http://www.acronymgeek.com/PCNO (accessed February 17, 2012). |
| CBE/CSE | PCNO [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/PCNO. |
| Bluebook | PCNO, http://www.acronymgeek.com/PCNO (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PCNO, http://www.acronymgeek.com/PCNO (optional description here) (as of Feb. 17, 2012, 00:23). |
| AMA | PCNO. Acronym Geek. February 17, 2012, 00:23. Available at: http://www.acronymgeek.com/PCNO. Accessed February 17, 2012, 00:23. |