| APA | 1R. (2012, February 14). In Acronym Geek. Retrieved 06:15, February 14, 2012, from http://www.acronymgeek.com/1R |
| MLA | "1R." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/1R>. |
| MHRA | '1R', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/1R> [accessed 14 February 2012] |
| Chicago | "1R", http://www.acronymgeek.com/1R (accessed February 14, 2012). |
| CBE/CSE | 1R [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/1R. |
| Bluebook | 1R, http://www.acronymgeek.com/1R (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 1R, http://www.acronymgeek.com/1R (optional description here) (as of Feb. 14, 2012, 06:15). |
| AMA | 1R. Acronym Geek. February 14, 2012, 06:15. Available at: http://www.acronymgeek.com/1R. Accessed February 14, 2012, 06:15. |