| Style | Reference Text |
|---|
| APA | 4R. (2010, February 9). In Acronym Geek. Retrieved 22:11, February 9, 2010, from http://www.acronymgeek.com/4R |
| MLA | "4R." Acronym Geek. 9 Feb 2010, 22:11. Acronym Geek. 9 Feb 2010 <http://www.acronymgeek.com/4R>. |
| MHRA | '4R', Acronym Geek, 9 February 2010, 22:11, <http://www.acronymgeek.com/4R> [accessed 9 February 2010] |
| Chicago | "4R," http://www.acronymgeek.com/4R (accessed February 9, 2010). |
| CBE/CSE | 4R [Internet]. Acronym Geek; 2010 Feb 9, 22:11 [cited 2010 Feb 9]. Available from: http://www.acronymgeek.com/4R. |
| Bluebook | 4R, http://www.acronymgeek.com/4R (last visited February 9, 2010). |
| Bluebook: Harvard JOLT | See Acronym Geek, 4R, http://www.acronymgeek.com/4R (optional description here) (as of Feb. 9, 2010, 22:11). |
| AMA | 4R. Acronym Geek. February 9, 2010, 22:11. Available at: http://www.acronymgeek.com/4R. Accessed February 9, 2010. |