| APA | RTEI. (2012, February 15). In Acronym Geek. Retrieved 15:00, February 15, 2012, from http://www.acronymgeek.com/RTEI |
| MLA | "RTEI." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/RTEI>. |
| MHRA | 'RTEI', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/RTEI> [accessed 15 February 2012] |
| Chicago | "RTEI", http://www.acronymgeek.com/RTEI (accessed February 15, 2012). |
| CBE/CSE | RTEI [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/RTEI. |
| Bluebook | RTEI, http://www.acronymgeek.com/RTEI (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, RTEI, http://www.acronymgeek.com/RTEI (optional description here) (as of Feb. 15, 2012, 15:00). |
| AMA | RTEI. Acronym Geek. February 15, 2012, 15:00. Available at: http://www.acronymgeek.com/RTEI. Accessed February 15, 2012, 15:00. |