| APA | GYIS. (2012, February 14). In Acronym Geek. Retrieved 08:13, February 14, 2012, from http://www.acronymgeek.com/GYIS |
| MLA | "GYIS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GYIS>. |
| MHRA | 'GYIS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GYIS> [accessed 14 February 2012] |
| Chicago | "GYIS", http://www.acronymgeek.com/GYIS (accessed February 14, 2012). |
| CBE/CSE | GYIS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GYIS. |
| Bluebook | GYIS, http://www.acronymgeek.com/GYIS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GYIS, http://www.acronymgeek.com/GYIS (optional description here) (as of Feb. 14, 2012, 08:13). |
| AMA | GYIS. Acronym Geek. February 14, 2012, 08:13. Available at: http://www.acronymgeek.com/GYIS. Accessed February 14, 2012, 08:13. |