| APA | 2B1D. (2012, February 9). In Acronym Geek. Retrieved 14:28, February 9, 2012, from http://www.acronymgeek.com/2B1D |
| MLA | "2B1D." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/2B1D>. |
| MHRA | '2B1D', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/2B1D> [accessed 9 February 2012] |
| Chicago | "2B1D", http://www.acronymgeek.com/2B1D (accessed February 9, 2012). |
| CBE/CSE | 2B1D [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/2B1D. |
| Bluebook | 2B1D, http://www.acronymgeek.com/2B1D (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 2B1D, http://www.acronymgeek.com/2B1D (optional description here) (as of Feb. 9, 2012, 14:28). |
| AMA | 2B1D. Acronym Geek. February 9, 2012, 14:28. Available at: http://www.acronymgeek.com/2B1D. Accessed February 9, 2012, 14:28. |