| APA | DIF. (2012, February 14). In Acronym Geek. Retrieved 06:38, February 14, 2012, from http://www.acronymgeek.com/DIF |
| MLA | "DIF." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/DIF>. |
| MHRA | 'DIF', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/DIF> [accessed 14 February 2012] |
| Chicago | "DIF", http://www.acronymgeek.com/DIF (accessed February 14, 2012). |
| CBE/CSE | DIF [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/DIF. |
| Bluebook | DIF, http://www.acronymgeek.com/DIF (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DIF, http://www.acronymgeek.com/DIF (optional description here) (as of Feb. 14, 2012, 06:38). |
| AMA | DIF. Acronym Geek. February 14, 2012, 06:38. Available at: http://www.acronymgeek.com/DIF. Accessed February 14, 2012, 06:38. |