| APA | PCHK. (2012, February 15). In Acronym Geek. Retrieved 21:21, February 15, 2012, from http://www.acronymgeek.com/PCHK |
| MLA | "PCHK." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PCHK>. |
| MHRA | 'PCHK', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PCHK> [accessed 15 February 2012] |
| Chicago | "PCHK", http://www.acronymgeek.com/PCHK (accessed February 15, 2012). |
| CBE/CSE | PCHK [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PCHK. |
| Bluebook | PCHK, http://www.acronymgeek.com/PCHK (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PCHK, http://www.acronymgeek.com/PCHK (optional description here) (as of Feb. 15, 2012, 21:21). |
| AMA | PCHK. Acronym Geek. February 15, 2012, 21:21. Available at: http://www.acronymgeek.com/PCHK. Accessed February 15, 2012, 21:21. |