| APA | HTMOS. (2012, February 10). In Acronym Geek. Retrieved 09:22, February 10, 2012, from http://www.acronymgeek.com/HTMOS |
| MLA | "HTMOS." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/HTMOS>. |
| MHRA | 'HTMOS', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/HTMOS> [accessed 10 February 2012] |
| Chicago | "HTMOS", http://www.acronymgeek.com/HTMOS (accessed February 10, 2012). |
| CBE/CSE | HTMOS [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/HTMOS. |
| Bluebook | HTMOS, http://www.acronymgeek.com/HTMOS (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HTMOS, http://www.acronymgeek.com/HTMOS (optional description here) (as of Feb. 10, 2012, 09:22). |
| AMA | HTMOS. Acronym Geek. February 10, 2012, 09:22. Available at: http://www.acronymgeek.com/HTMOS. Accessed February 10, 2012, 09:22. |