| APA | SUFD. (2012, February 17). In Acronym Geek. Retrieved 00:50, February 17, 2012, from http://www.acronymgeek.com/SUFD |
| MLA | "SUFD." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/SUFD>. |
| MHRA | 'SUFD', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/SUFD> [accessed 17 February 2012] |
| Chicago | "SUFD", http://www.acronymgeek.com/SUFD (accessed February 17, 2012). |
| CBE/CSE | SUFD [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/SUFD. |
| Bluebook | SUFD, http://www.acronymgeek.com/SUFD (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SUFD, http://www.acronymgeek.com/SUFD (optional description here) (as of Feb. 17, 2012, 00:50). |
| AMA | SUFD. Acronym Geek. February 17, 2012, 00:50. Available at: http://www.acronymgeek.com/SUFD. Accessed February 17, 2012, 00:50. |