| APA | GISS. (2012, February 12). In Acronym Geek. Retrieved 01:38, February 12, 2012, from http://www.acronymgeek.com/GISS |
| MLA | "GISS." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/GISS>. |
| MHRA | 'GISS', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/GISS> [accessed 12 February 2012] |
| Chicago | "GISS", http://www.acronymgeek.com/GISS (accessed February 12, 2012). |
| CBE/CSE | GISS [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/GISS. |
| Bluebook | GISS, http://www.acronymgeek.com/GISS (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GISS, http://www.acronymgeek.com/GISS (optional description here) (as of Feb. 12, 2012, 01:38). |
| AMA | GISS. Acronym Geek. February 12, 2012, 01:38. Available at: http://www.acronymgeek.com/GISS. Accessed February 12, 2012, 01:38. |