| APA | GCGD. (2012, February 17). In Acronym Geek. Retrieved 06:43, February 17, 2012, from http://www.acronymgeek.com/GCGD |
| MLA | "GCGD." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/GCGD>. |
| MHRA | 'GCGD', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/GCGD> [accessed 17 February 2012] |
| Chicago | "GCGD", http://www.acronymgeek.com/GCGD (accessed February 17, 2012). |
| CBE/CSE | GCGD [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/GCGD. |
| Bluebook | GCGD, http://www.acronymgeek.com/GCGD (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GCGD, http://www.acronymgeek.com/GCGD (optional description here) (as of Feb. 17, 2012, 06:43). |
| AMA | GCGD. Acronym Geek. February 17, 2012, 06:43. Available at: http://www.acronymgeek.com/GCGD. Accessed February 17, 2012, 06:43. |