| APA | RETR. (2012, February 15). In Acronym Geek. Retrieved 17:20, February 15, 2012, from http://www.acronymgeek.com/RETR |
| MLA | "RETR." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/RETR>. |
| MHRA | 'RETR', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/RETR> [accessed 15 February 2012] |
| Chicago | "RETR", http://www.acronymgeek.com/RETR (accessed February 15, 2012). |
| CBE/CSE | RETR [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/RETR. |
| Bluebook | RETR, http://www.acronymgeek.com/RETR (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, RETR, http://www.acronymgeek.com/RETR (optional description here) (as of Feb. 15, 2012, 17:20). |
| AMA | RETR. Acronym Geek. February 15, 2012, 17:20. Available at: http://www.acronymgeek.com/RETR. Accessed February 15, 2012, 17:20. |