| APA | OST. (2012, February 14). In Acronym Geek. Retrieved 09:05, February 14, 2012, from http://www.acronymgeek.com/OST |
| MLA | "OST." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OST>. |
| MHRA | 'OST', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OST> [accessed 14 February 2012] |
| Chicago | "OST", http://www.acronymgeek.com/OST (accessed February 14, 2012). |
| CBE/CSE | OST [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OST. |
| Bluebook | OST, http://www.acronymgeek.com/OST (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OST, http://www.acronymgeek.com/OST (optional description here) (as of Feb. 14, 2012, 09:05). |
| AMA | OST. Acronym Geek. February 14, 2012, 09:05. Available at: http://www.acronymgeek.com/OST. Accessed February 14, 2012, 09:05. |