| APA | NDY. (2012, February 13). In Acronym Geek. Retrieved 23:43, February 13, 2012, from http://www.acronymgeek.com/NDY |
| MLA | "NDY." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/NDY>. |
| MHRA | 'NDY', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/NDY> [accessed 13 February 2012] |
| Chicago | "NDY", http://www.acronymgeek.com/NDY (accessed February 13, 2012). |
| CBE/CSE | NDY [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/NDY. |
| Bluebook | NDY, http://www.acronymgeek.com/NDY (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NDY, http://www.acronymgeek.com/NDY (optional description here) (as of Feb. 13, 2012, 23:43). |
| AMA | NDY. Acronym Geek. February 13, 2012, 23:43. Available at: http://www.acronymgeek.com/NDY. Accessed February 13, 2012, 23:43. |