| APA | PTGS. (2012, February 15). In Acronym Geek. Retrieved 04:38, February 15, 2012, from http://www.acronymgeek.com/PTGS |
| MLA | "PTGS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PTGS>. |
| MHRA | 'PTGS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PTGS> [accessed 15 February 2012] |
| Chicago | "PTGS", http://www.acronymgeek.com/PTGS (accessed February 15, 2012). |
| CBE/CSE | PTGS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PTGS. |
| Bluebook | PTGS, http://www.acronymgeek.com/PTGS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PTGS, http://www.acronymgeek.com/PTGS (optional description here) (as of Feb. 15, 2012, 04:38). |
| AMA | PTGS. Acronym Geek. February 15, 2012, 04:38. Available at: http://www.acronymgeek.com/PTGS. Accessed February 15, 2012, 04:38. |