| APA | R4R. (2012, February 13). In Acronym Geek. Retrieved 21:19, February 13, 2012, from http://www.acronymgeek.com/R4R |
| MLA | "R4R." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/R4R>. |
| MHRA | 'R4R', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/R4R> [accessed 13 February 2012] |
| Chicago | "R4R", http://www.acronymgeek.com/R4R (accessed February 13, 2012). |
| CBE/CSE | R4R [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/R4R. |
| Bluebook | R4R, http://www.acronymgeek.com/R4R (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, R4R, http://www.acronymgeek.com/R4R (optional description here) (as of Feb. 13, 2012, 21:19). |
| AMA | R4R. Acronym Geek. February 13, 2012, 21:19. Available at: http://www.acronymgeek.com/R4R. Accessed February 13, 2012, 21:19. |