| APA | PRG. (2012, February 14). In Acronym Geek. Retrieved 06:28, February 14, 2012, from http://www.acronymgeek.com/PRG |
| MLA | "PRG." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PRG>. |
| MHRA | 'PRG', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PRG> [accessed 14 February 2012] |
| Chicago | "PRG", http://www.acronymgeek.com/PRG (accessed February 14, 2012). |
| CBE/CSE | PRG [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PRG. |
| Bluebook | PRG, http://www.acronymgeek.com/PRG (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PRG, http://www.acronymgeek.com/PRG (optional description here) (as of Feb. 14, 2012, 06:28). |
| AMA | PRG. Acronym Geek. February 14, 2012, 06:28. Available at: http://www.acronymgeek.com/PRG. Accessed February 14, 2012, 06:28. |