| APA | N-ISDN. (2012, February 12). In Acronym Geek. Retrieved 15:38, February 12, 2012, from http://www.acronymgeek.com/N-ISDN |
| MLA | "N-ISDN." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/N-ISDN>. |
| MHRA | 'N-ISDN', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/N-ISDN> [accessed 12 February 2012] |
| Chicago | "N-ISDN", http://www.acronymgeek.com/N-ISDN (accessed February 12, 2012). |
| CBE/CSE | N-ISDN [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/N-ISDN. |
| Bluebook | N-ISDN, http://www.acronymgeek.com/N-ISDN (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, N-ISDN, http://www.acronymgeek.com/N-ISDN (optional description here) (as of Feb. 12, 2012, 15:38). |
| AMA | N-ISDN. Acronym Geek. February 12, 2012, 15:38. Available at: http://www.acronymgeek.com/N-ISDN. Accessed February 12, 2012, 15:38. |