| APA | GREP. (2012, February 10). In Acronym Geek. Retrieved 12:46, February 10, 2012, from http://www.acronymgeek.com/GREP |
| MLA | "GREP." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/GREP>. |
| MHRA | 'GREP', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/GREP> [accessed 10 February 2012] |
| Chicago | "GREP", http://www.acronymgeek.com/GREP (accessed February 10, 2012). |
| CBE/CSE | GREP [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/GREP. |
| Bluebook | GREP, http://www.acronymgeek.com/GREP (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GREP, http://www.acronymgeek.com/GREP (optional description here) (as of Feb. 10, 2012, 12:46). |
| AMA | GREP. Acronym Geek. February 10, 2012, 12:46. Available at: http://www.acronymgeek.com/GREP. Accessed February 10, 2012, 12:46. |