| APA | RA-EN. (2012, February 12). In Acronym Geek. Retrieved 11:37, February 12, 2012, from http://www.acronymgeek.com/RA-EN |
| MLA | "RA-EN." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/RA-EN>. |
| MHRA | 'RA-EN', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/RA-EN> [accessed 12 February 2012] |
| Chicago | "RA-EN", http://www.acronymgeek.com/RA-EN (accessed February 12, 2012). |
| CBE/CSE | RA-EN [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/RA-EN. |
| Bluebook | RA-EN, http://www.acronymgeek.com/RA-EN (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, RA-EN, http://www.acronymgeek.com/RA-EN (optional description here) (as of Feb. 12, 2012, 11:37). |
| AMA | RA-EN. Acronym Geek. February 12, 2012, 11:37. Available at: http://www.acronymgeek.com/RA-EN. Accessed February 12, 2012, 11:37. |