| APA | DR2. (2012, February 13). In Acronym Geek. Retrieved 21:00, February 13, 2012, from http://www.acronymgeek.com/DR2 |
| MLA | "DR2." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/DR2>. |
| MHRA | 'DR2', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/DR2> [accessed 13 February 2012] |
| Chicago | "DR2", http://www.acronymgeek.com/DR2 (accessed February 13, 2012). |
| CBE/CSE | DR2 [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/DR2. |
| Bluebook | DR2, http://www.acronymgeek.com/DR2 (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DR2, http://www.acronymgeek.com/DR2 (optional description here) (as of Feb. 13, 2012, 21:00). |
| AMA | DR2. Acronym Geek. February 13, 2012, 21:00. Available at: http://www.acronymgeek.com/DR2. Accessed February 13, 2012, 21:00. |