| APA | SYN. (2012, February 10). In Acronym Geek. Retrieved 10:54, February 10, 2012, from http://www.acronymgeek.com/SYN |
| MLA | "SYN." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/SYN>. |
| MHRA | 'SYN', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/SYN> [accessed 10 February 2012] |
| Chicago | "SYN", http://www.acronymgeek.com/SYN (accessed February 10, 2012). |
| CBE/CSE | SYN [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/SYN. |
| Bluebook | SYN, http://www.acronymgeek.com/SYN (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SYN, http://www.acronymgeek.com/SYN (optional description here) (as of Feb. 10, 2012, 10:54). |
| AMA | SYN. Acronym Geek. February 10, 2012, 10:54. Available at: http://www.acronymgeek.com/SYN. Accessed February 10, 2012, 10:54. |