| APA | GRES. (2012, February 15). In Acronym Geek. Retrieved 02:14, February 15, 2012, from http://www.acronymgeek.com/GRES |
| MLA | "GRES." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/GRES>. |
| MHRA | 'GRES', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/GRES> [accessed 15 February 2012] |
| Chicago | "GRES", http://www.acronymgeek.com/GRES (accessed February 15, 2012). |
| CBE/CSE | GRES [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/GRES. |
| Bluebook | GRES, http://www.acronymgeek.com/GRES (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GRES, http://www.acronymgeek.com/GRES (optional description here) (as of Feb. 15, 2012, 02:14). |
| AMA | GRES. Acronym Geek. February 15, 2012, 02:14. Available at: http://www.acronymgeek.com/GRES. Accessed February 15, 2012, 02:14. |