| APA | GTEL. (2012, February 15). In Acronym Geek. Retrieved 20:10, February 15, 2012, from http://www.acronymgeek.com/GTEL |
| MLA | "GTEL." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/GTEL>. |
| MHRA | 'GTEL', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/GTEL> [accessed 15 February 2012] |
| Chicago | "GTEL", http://www.acronymgeek.com/GTEL (accessed February 15, 2012). |
| CBE/CSE | GTEL [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/GTEL. |
| Bluebook | GTEL, http://www.acronymgeek.com/GTEL (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GTEL, http://www.acronymgeek.com/GTEL (optional description here) (as of Feb. 15, 2012, 20:10). |
| AMA | GTEL. Acronym Geek. February 15, 2012, 20:10. Available at: http://www.acronymgeek.com/GTEL. Accessed February 15, 2012, 20:10. |