| APA | HQSO. (2012, February 15). In Acronym Geek. Retrieved 16:35, February 15, 2012, from http://www.acronymgeek.com/HQSO |
| MLA | "HQSO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HQSO>. |
| MHRA | 'HQSO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HQSO> [accessed 15 February 2012] |
| Chicago | "HQSO", http://www.acronymgeek.com/HQSO (accessed February 15, 2012). |
| CBE/CSE | HQSO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HQSO. |
| Bluebook | HQSO, http://www.acronymgeek.com/HQSO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HQSO, http://www.acronymgeek.com/HQSO (optional description here) (as of Feb. 15, 2012, 16:35). |
| AMA | HQSO. Acronym Geek. February 15, 2012, 16:35. Available at: http://www.acronymgeek.com/HQSO. Accessed February 15, 2012, 16:35. |