| APA | HST. (2012, February 13). In Acronym Geek. Retrieved 22:03, February 13, 2012, from http://www.acronymgeek.com/HST/alphabetical |
| MLA | "HST." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/HST/alphabetical>. |
| MHRA | 'HST', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/HST/alphabetical> [accessed 13 February 2012] |
| Chicago | "HST", http://www.acronymgeek.com/HST/alphabetical (accessed February 13, 2012). |
| CBE/CSE | HST [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/HST/alphabetical. |
| Bluebook | HST, http://www.acronymgeek.com/HST/alphabetical (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HST, http://www.acronymgeek.com/HST/alphabetical (optional description here) (as of Feb. 13, 2012, 22:03). |
| AMA | HST. Acronym Geek. February 13, 2012, 22:03. Available at: http://www.acronymgeek.com/HST/alphabetical. Accessed February 13, 2012, 22:03. |