| APA | GTP. (2012, February 14). In Acronym Geek. Retrieved 06:34, February 14, 2012, from http://www.acronymgeek.com/GTP |
| MLA | "GTP." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GTP>. |
| MHRA | 'GTP', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GTP> [accessed 14 February 2012] |
| Chicago | "GTP", http://www.acronymgeek.com/GTP (accessed February 14, 2012). |
| CBE/CSE | GTP [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GTP. |
| Bluebook | GTP, http://www.acronymgeek.com/GTP (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GTP, http://www.acronymgeek.com/GTP (optional description here) (as of Feb. 14, 2012, 06:34). |
| AMA | GTP. Acronym Geek. February 14, 2012, 06:34. Available at: http://www.acronymgeek.com/GTP. Accessed February 14, 2012, 06:34. |