| APA | SFDI. (2012, February 15). In Acronym Geek. Retrieved 20:36, February 15, 2012, from http://www.acronymgeek.com/SFDI |
| MLA | "SFDI." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/SFDI>. |
| MHRA | 'SFDI', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/SFDI> [accessed 15 February 2012] |
| Chicago | "SFDI", http://www.acronymgeek.com/SFDI (accessed February 15, 2012). |
| CBE/CSE | SFDI [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/SFDI. |
| Bluebook | SFDI, http://www.acronymgeek.com/SFDI (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SFDI, http://www.acronymgeek.com/SFDI (optional description here) (as of Feb. 15, 2012, 20:36). |
| AMA | SFDI. Acronym Geek. February 15, 2012, 20:36. Available at: http://www.acronymgeek.com/SFDI. Accessed February 15, 2012, 20:36. |