| APA | SLFO. (2012, February 16). In Acronym Geek. Retrieved 20:09, February 16, 2012, from http://www.acronymgeek.com/SLFO |
| MLA | "SLFO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/SLFO>. |
| MHRA | 'SLFO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/SLFO> [accessed 16 February 2012] |
| Chicago | "SLFO", http://www.acronymgeek.com/SLFO (accessed February 16, 2012). |
| CBE/CSE | SLFO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/SLFO. |
| Bluebook | SLFO, http://www.acronymgeek.com/SLFO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SLFO, http://www.acronymgeek.com/SLFO (optional description here) (as of Feb. 16, 2012, 20:09). |
| AMA | SLFO. Acronym Geek. February 16, 2012, 20:09. Available at: http://www.acronymgeek.com/SLFO. Accessed February 16, 2012, 20:09. |