| APA | HGSP. (2012, February 15). In Acronym Geek. Retrieved 23:57, February 15, 2012, from http://www.acronymgeek.com/HGSP |
| MLA | "HGSP." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HGSP>. |
| MHRA | 'HGSP', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HGSP> [accessed 15 February 2012] |
| Chicago | "HGSP", http://www.acronymgeek.com/HGSP (accessed February 15, 2012). |
| CBE/CSE | HGSP [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HGSP. |
| Bluebook | HGSP, http://www.acronymgeek.com/HGSP (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HGSP, http://www.acronymgeek.com/HGSP (optional description here) (as of Feb. 15, 2012, 23:57). |
| AMA | HGSP. Acronym Geek. February 15, 2012, 23:57. Available at: http://www.acronymgeek.com/HGSP. Accessed February 15, 2012, 23:57. |