| APA | GPT. (2012, February 13). In Acronym Geek. Retrieved 23:28, February 13, 2012, from http://www.acronymgeek.com/GPT |
| MLA | "GPT." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/GPT>. |
| MHRA | 'GPT', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/GPT> [accessed 13 February 2012] |
| Chicago | "GPT", http://www.acronymgeek.com/GPT (accessed February 13, 2012). |
| CBE/CSE | GPT [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/GPT. |
| Bluebook | GPT, http://www.acronymgeek.com/GPT (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GPT, http://www.acronymgeek.com/GPT (optional description here) (as of Feb. 13, 2012, 23:28). |
| AMA | GPT. Acronym Geek. February 13, 2012, 23:28. Available at: http://www.acronymgeek.com/GPT. Accessed February 13, 2012, 23:28. |