| APA | NGOK. (2012, February 16). In Acronym Geek. Retrieved 16:28, February 16, 2012, from http://www.acronymgeek.com/NGOK |
| MLA | "NGOK." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/NGOK>. |
| MHRA | 'NGOK', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/NGOK> [accessed 16 February 2012] |
| Chicago | "NGOK", http://www.acronymgeek.com/NGOK (accessed February 16, 2012). |
| CBE/CSE | NGOK [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/NGOK. |
| Bluebook | NGOK, http://www.acronymgeek.com/NGOK (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NGOK, http://www.acronymgeek.com/NGOK (optional description here) (as of Feb. 16, 2012, 16:28). |
| AMA | NGOK. Acronym Geek. February 16, 2012, 16:28. Available at: http://www.acronymgeek.com/NGOK. Accessed February 16, 2012, 16:28. |