| APA | IGNA. (2012, February 16). In Acronym Geek. Retrieved 23:07, February 16, 2012, from http://www.acronymgeek.com/IGNA |
| MLA | "IGNA." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/IGNA>. |
| MHRA | 'IGNA', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/IGNA> [accessed 16 February 2012] |
| Chicago | "IGNA", http://www.acronymgeek.com/IGNA (accessed February 16, 2012). |
| CBE/CSE | IGNA [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/IGNA. |
| Bluebook | IGNA, http://www.acronymgeek.com/IGNA (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, IGNA, http://www.acronymgeek.com/IGNA (optional description here) (as of Feb. 16, 2012, 23:07). |
| AMA | IGNA. Acronym Geek. February 16, 2012, 23:07. Available at: http://www.acronymgeek.com/IGNA. Accessed February 16, 2012, 23:07. |