| APA | GBPT. (2012, February 16). In Acronym Geek. Retrieved 18:57, February 16, 2012, from http://www.acronymgeek.com/GBPT |
| MLA | "GBPT." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/GBPT>. |
| MHRA | 'GBPT', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/GBPT> [accessed 16 February 2012] |
| Chicago | "GBPT", http://www.acronymgeek.com/GBPT (accessed February 16, 2012). |
| CBE/CSE | GBPT [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/GBPT. |
| Bluebook | GBPT, http://www.acronymgeek.com/GBPT (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GBPT, http://www.acronymgeek.com/GBPT (optional description here) (as of Feb. 16, 2012, 18:57). |
| AMA | GBPT. Acronym Geek. February 16, 2012, 18:57. Available at: http://www.acronymgeek.com/GBPT. Accessed February 16, 2012, 18:57. |