| APA | PRGS. (2012, February 14). In Acronym Geek. Retrieved 14:05, February 14, 2012, from http://www.acronymgeek.com/PRGS |
| MLA | "PRGS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PRGS>. |
| MHRA | 'PRGS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PRGS> [accessed 14 February 2012] |
| Chicago | "PRGS", http://www.acronymgeek.com/PRGS (accessed February 14, 2012). |
| CBE/CSE | PRGS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PRGS. |
| Bluebook | PRGS, http://www.acronymgeek.com/PRGS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PRGS, http://www.acronymgeek.com/PRGS (optional description here) (as of Feb. 14, 2012, 14:05). |
| AMA | PRGS. Acronym Geek. February 14, 2012, 14:05. Available at: http://www.acronymgeek.com/PRGS. Accessed February 14, 2012, 14:05. |