| APA | A4ID. (2012, February 16). In Acronym Geek. Retrieved 18:27, February 16, 2012, from http://www.acronymgeek.com/A4ID |
| MLA | "A4ID." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/A4ID>. |
| MHRA | 'A4ID', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/A4ID> [accessed 16 February 2012] |
| Chicago | "A4ID", http://www.acronymgeek.com/A4ID (accessed February 16, 2012). |
| CBE/CSE | A4ID [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/A4ID. |
| Bluebook | A4ID, http://www.acronymgeek.com/A4ID (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, A4ID, http://www.acronymgeek.com/A4ID (optional description here) (as of Feb. 16, 2012, 18:27). |
| AMA | A4ID. Acronym Geek. February 16, 2012, 18:27. Available at: http://www.acronymgeek.com/A4ID. Accessed February 16, 2012, 18:27. |