| APA | NGD. (2012, February 14). In Acronym Geek. Retrieved 20:42, February 14, 2012, from http://www.acronymgeek.com/NGD |
| MLA | "NGD." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/NGD>. |
| MHRA | 'NGD', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/NGD> [accessed 14 February 2012] |
| Chicago | "NGD", http://www.acronymgeek.com/NGD (accessed February 14, 2012). |
| CBE/CSE | NGD [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/NGD. |
| Bluebook | NGD, http://www.acronymgeek.com/NGD (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NGD, http://www.acronymgeek.com/NGD (optional description here) (as of Feb. 14, 2012, 20:42). |
| AMA | NGD. Acronym Geek. February 14, 2012, 20:42. Available at: http://www.acronymgeek.com/NGD. Accessed February 14, 2012, 20:42. |