| APA | IDL. (2012, February 8). In Acronym Geek. Retrieved 23:58, February 8, 2012, from http://www.acronymgeek.com/IDL |
| MLA | "IDL." Acronym Geek. (2012). Acronym Geek. 8 Feb 2012 <http://www.acronymgeek.com/IDL>. |
| MHRA | 'IDL', Acronym Geek, 8 February 2012, <http://www.acronymgeek.com/IDL> [accessed 8 February 2012] |
| Chicago | "IDL", http://www.acronymgeek.com/IDL (accessed February 8, 2012). |
| CBE/CSE | IDL [Internet]. Acronym Geek; 2012 Feb 8 [cited 2012 Feb 8]. Available from: http://www.acronymgeek.com/IDL. |
| Bluebook | IDL, http://www.acronymgeek.com/IDL (last visited February 8, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, IDL, http://www.acronymgeek.com/IDL (optional description here) (as of Feb. 8, 2012, 23:58). |
| AMA | IDL. Acronym Geek. February 8, 2012, 23:58. Available at: http://www.acronymgeek.com/IDL. Accessed February 8, 2012, 23:58. |