| APA | PTGE. (2012, February 15). In Acronym Geek. Retrieved 10:15, February 15, 2012, from http://www.acronymgeek.com/PTGE |
| MLA | "PTGE." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PTGE>. |
| MHRA | 'PTGE', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PTGE> [accessed 15 February 2012] |
| Chicago | "PTGE", http://www.acronymgeek.com/PTGE (accessed February 15, 2012). |
| CBE/CSE | PTGE [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PTGE. |
| Bluebook | PTGE, http://www.acronymgeek.com/PTGE (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PTGE, http://www.acronymgeek.com/PTGE (optional description here) (as of Feb. 15, 2012, 10:15). |
| AMA | PTGE. Acronym Geek. February 15, 2012, 10:15. Available at: http://www.acronymgeek.com/PTGE. Accessed February 15, 2012, 10:15. |