| APA | GREU. (2012, February 15). In Acronym Geek. Retrieved 17:39, February 15, 2012, from http://www.acronymgeek.com/GREU |
| MLA | "GREU." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/GREU>. |
| MHRA | 'GREU', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/GREU> [accessed 15 February 2012] |
| Chicago | "GREU", http://www.acronymgeek.com/GREU (accessed February 15, 2012). |
| CBE/CSE | GREU [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/GREU. |
| Bluebook | GREU, http://www.acronymgeek.com/GREU (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GREU, http://www.acronymgeek.com/GREU (optional description here) (as of Feb. 15, 2012, 17:39). |
| AMA | GREU. Acronym Geek. February 15, 2012, 17:39. Available at: http://www.acronymgeek.com/GREU. Accessed February 15, 2012, 17:39. |