| APA | PTGB. (2012, February 16). In Acronym Geek. Retrieved 06:27, February 16, 2012, from http://www.acronymgeek.com/PTGB |
| MLA | "PTGB." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PTGB>. |
| MHRA | 'PTGB', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PTGB> [accessed 16 February 2012] |
| Chicago | "PTGB", http://www.acronymgeek.com/PTGB (accessed February 16, 2012). |
| CBE/CSE | PTGB [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PTGB. |
| Bluebook | PTGB, http://www.acronymgeek.com/PTGB (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PTGB, http://www.acronymgeek.com/PTGB (optional description here) (as of Feb. 16, 2012, 06:27). |
| AMA | PTGB. Acronym Geek. February 16, 2012, 06:27. Available at: http://www.acronymgeek.com/PTGB. Accessed February 16, 2012, 06:27. |