| APA | 3DA. (2012, February 11). In Acronym Geek. Retrieved 22:49, February 11, 2012, from http://www.acronymgeek.com/3DA |
| MLA | "3DA." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/3DA>. |
| MHRA | '3DA', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/3DA> [accessed 11 February 2012] |
| Chicago | "3DA", http://www.acronymgeek.com/3DA (accessed February 11, 2012). |
| CBE/CSE | 3DA [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/3DA. |
| Bluebook | 3DA, http://www.acronymgeek.com/3DA (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 3DA, http://www.acronymgeek.com/3DA (optional description here) (as of Feb. 11, 2012, 22:49). |
| AMA | 3DA. Acronym Geek. February 11, 2012, 22:49. Available at: http://www.acronymgeek.com/3DA. Accessed February 11, 2012, 22:49. |