| APA | NIGD. (2012, February 16). In Acronym Geek. Retrieved 21:13, February 16, 2012, from http://www.acronymgeek.com/NIGD |
| MLA | "NIGD." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/NIGD>. |
| MHRA | 'NIGD', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/NIGD> [accessed 16 February 2012] |
| Chicago | "NIGD", http://www.acronymgeek.com/NIGD (accessed February 16, 2012). |
| CBE/CSE | NIGD [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/NIGD. |
| Bluebook | NIGD, http://www.acronymgeek.com/NIGD (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NIGD, http://www.acronymgeek.com/NIGD (optional description here) (as of Feb. 16, 2012, 21:13). |
| AMA | NIGD. Acronym Geek. February 16, 2012, 21:13. Available at: http://www.acronymgeek.com/NIGD. Accessed February 16, 2012, 21:13. |