| APA | HST. (2012, February 9). In Acronym Geek. Retrieved 00:49, February 9, 2012, from http://www.acronymgeek.com/HST |
| MLA | "HST." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/HST>. |
| MHRA | 'HST', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/HST> [accessed 9 February 2012] |
| Chicago | "HST", http://www.acronymgeek.com/HST (accessed February 9, 2012). |
| CBE/CSE | HST [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/HST. |
| Bluebook | HST, http://www.acronymgeek.com/HST (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HST, http://www.acronymgeek.com/HST (optional description here) (as of Feb. 9, 2012, 00:49). |
| AMA | HST. Acronym Geek. February 9, 2012, 00:49. Available at: http://www.acronymgeek.com/HST. Accessed February 9, 2012, 00:49. |