| APA | H2G. (2012, February 13). In Acronym Geek. Retrieved 23:38, February 13, 2012, from http://www.acronymgeek.com/H2G |
| MLA | "H2G." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/H2G>. |
| MHRA | 'H2G', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/H2G> [accessed 13 February 2012] |
| Chicago | "H2G", http://www.acronymgeek.com/H2G (accessed February 13, 2012). |
| CBE/CSE | H2G [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/H2G. |
| Bluebook | H2G, http://www.acronymgeek.com/H2G (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, H2G, http://www.acronymgeek.com/H2G (optional description here) (as of Feb. 13, 2012, 23:38). |
| AMA | H2G. Acronym Geek. February 13, 2012, 23:38. Available at: http://www.acronymgeek.com/H2G. Accessed February 13, 2012, 23:38. |