| APA | RETU. (2012, February 16). In Acronym Geek. Retrieved 04:19, February 16, 2012, from http://www.acronymgeek.com/RETU |
| MLA | "RETU." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/RETU>. |
| MHRA | 'RETU', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/RETU> [accessed 16 February 2012] |
| Chicago | "RETU", http://www.acronymgeek.com/RETU (accessed February 16, 2012). |
| CBE/CSE | RETU [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/RETU. |
| Bluebook | RETU, http://www.acronymgeek.com/RETU (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, RETU, http://www.acronymgeek.com/RETU (optional description here) (as of Feb. 16, 2012, 04:19). |
| AMA | RETU. Acronym Geek. February 16, 2012, 04:19. Available at: http://www.acronymgeek.com/RETU. Accessed February 16, 2012, 04:19. |