| APA | PGCK. (2012, February 14). In Acronym Geek. Retrieved 20:51, February 14, 2012, from http://www.acronymgeek.com/PGCK |
| MLA | "PGCK." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PGCK>. |
| MHRA | 'PGCK', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PGCK> [accessed 14 February 2012] |
| Chicago | "PGCK", http://www.acronymgeek.com/PGCK (accessed February 14, 2012). |
| CBE/CSE | PGCK [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PGCK. |
| Bluebook | PGCK, http://www.acronymgeek.com/PGCK (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PGCK, http://www.acronymgeek.com/PGCK (optional description here) (as of Feb. 14, 2012, 20:51). |
| AMA | PGCK. Acronym Geek. February 14, 2012, 20:51. Available at: http://www.acronymgeek.com/PGCK. Accessed February 14, 2012, 20:51. |