| APA | GREA. (2012, February 16). In Acronym Geek. Retrieved 23:57, February 16, 2012, from http://www.acronymgeek.com/GREA |
| MLA | "GREA." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/GREA>. |
| MHRA | 'GREA', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/GREA> [accessed 16 February 2012] |
| Chicago | "GREA", http://www.acronymgeek.com/GREA (accessed February 16, 2012). |
| CBE/CSE | GREA [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/GREA. |
| Bluebook | GREA, http://www.acronymgeek.com/GREA (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GREA, http://www.acronymgeek.com/GREA (optional description here) (as of Feb. 16, 2012, 23:57). |
| AMA | GREA. Acronym Geek. February 16, 2012, 23:57. Available at: http://www.acronymgeek.com/GREA. Accessed February 16, 2012, 23:57. |