| APA | GTM. (2012, February 13). In Acronym Geek. Retrieved 21:47, February 13, 2012, from http://www.acronymgeek.com/GTM |
| MLA | "GTM." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/GTM>. |
| MHRA | 'GTM', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/GTM> [accessed 13 February 2012] |
| Chicago | "GTM", http://www.acronymgeek.com/GTM (accessed February 13, 2012). |
| CBE/CSE | GTM [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/GTM. |
| Bluebook | GTM, http://www.acronymgeek.com/GTM (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GTM, http://www.acronymgeek.com/GTM (optional description here) (as of Feb. 13, 2012, 21:47). |
| AMA | GTM. Acronym Geek. February 13, 2012, 21:47. Available at: http://www.acronymgeek.com/GTM. Accessed February 13, 2012, 21:47. |