| APA | R2D. (2012, February 13). In Acronym Geek. Retrieved 21:11, February 13, 2012, from http://www.acronymgeek.com/R2D |
| MLA | "R2D." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/R2D>. |
| MHRA | 'R2D', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/R2D> [accessed 13 February 2012] |
| Chicago | "R2D", http://www.acronymgeek.com/R2D (accessed February 13, 2012). |
| CBE/CSE | R2D [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/R2D. |
| Bluebook | R2D, http://www.acronymgeek.com/R2D (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, R2D, http://www.acronymgeek.com/R2D (optional description here) (as of Feb. 13, 2012, 21:11). |
| AMA | R2D. Acronym Geek. February 13, 2012, 21:11. Available at: http://www.acronymgeek.com/R2D. Accessed February 13, 2012, 21:11. |