| APA | G2SY. (2012, February 15). In Acronym Geek. Retrieved 13:52, February 15, 2012, from http://www.acronymgeek.com/G2SY |
| MLA | "G2SY." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/G2SY>. |
| MHRA | 'G2SY', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/G2SY> [accessed 15 February 2012] |
| Chicago | "G2SY", http://www.acronymgeek.com/G2SY (accessed February 15, 2012). |
| CBE/CSE | G2SY [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/G2SY. |
| Bluebook | G2SY, http://www.acronymgeek.com/G2SY (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, G2SY, http://www.acronymgeek.com/G2SY (optional description here) (as of Feb. 15, 2012, 13:52). |
| AMA | G2SY. Acronym Geek. February 15, 2012, 13:52. Available at: http://www.acronymgeek.com/G2SY. Accessed February 15, 2012, 13:52. |