| APA | GSTS. (2012, February 15). In Acronym Geek. Retrieved 16:50, February 15, 2012, from http://www.acronymgeek.com/GSTS |
| MLA | "GSTS." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/GSTS>. |
| MHRA | 'GSTS', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/GSTS> [accessed 15 February 2012] |
| Chicago | "GSTS", http://www.acronymgeek.com/GSTS (accessed February 15, 2012). |
| CBE/CSE | GSTS [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/GSTS. |
| Bluebook | GSTS, http://www.acronymgeek.com/GSTS (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GSTS, http://www.acronymgeek.com/GSTS (optional description here) (as of Feb. 15, 2012, 16:50). |
| AMA | GSTS. Acronym Geek. February 15, 2012, 16:50. Available at: http://www.acronymgeek.com/GSTS. Accessed February 15, 2012, 16:50. |