| APA | HBGL. (2012, February 15). In Acronym Geek. Retrieved 19:17, February 15, 2012, from http://www.acronymgeek.com/HBGL |
| MLA | "HBGL." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HBGL>. |
| MHRA | 'HBGL', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HBGL> [accessed 15 February 2012] |
| Chicago | "HBGL", http://www.acronymgeek.com/HBGL (accessed February 15, 2012). |
| CBE/CSE | HBGL [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HBGL. |
| Bluebook | HBGL, http://www.acronymgeek.com/HBGL (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HBGL, http://www.acronymgeek.com/HBGL (optional description here) (as of Feb. 15, 2012, 19:17). |
| AMA | HBGL. Acronym Geek. February 15, 2012, 19:17. Available at: http://www.acronymgeek.com/HBGL. Accessed February 15, 2012, 19:17. |