| APA | GCBL. (2012, February 15). In Acronym Geek. Retrieved 22:40, February 15, 2012, from http://www.acronymgeek.com/GCBL |
| MLA | "GCBL." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/GCBL>. |
| MHRA | 'GCBL', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/GCBL> [accessed 15 February 2012] |
| Chicago | "GCBL", http://www.acronymgeek.com/GCBL (accessed February 15, 2012). |
| CBE/CSE | GCBL [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/GCBL. |
| Bluebook | GCBL, http://www.acronymgeek.com/GCBL (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GCBL, http://www.acronymgeek.com/GCBL (optional description here) (as of Feb. 15, 2012, 22:40). |
| AMA | GCBL. Acronym Geek. February 15, 2012, 22:40. Available at: http://www.acronymgeek.com/GCBL. Accessed February 15, 2012, 22:40. |