| APA | GFDZ. (2012, February 16). In Acronym Geek. Retrieved 02:49, February 16, 2012, from http://www.acronymgeek.com/GFDZ |
| MLA | "GFDZ." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/GFDZ>. |
| MHRA | 'GFDZ', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/GFDZ> [accessed 16 February 2012] |
| Chicago | "GFDZ", http://www.acronymgeek.com/GFDZ (accessed February 16, 2012). |
| CBE/CSE | GFDZ [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/GFDZ. |
| Bluebook | GFDZ, http://www.acronymgeek.com/GFDZ (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GFDZ, http://www.acronymgeek.com/GFDZ (optional description here) (as of Feb. 16, 2012, 02:49). |
| AMA | GFDZ. Acronym Geek. February 16, 2012, 02:49. Available at: http://www.acronymgeek.com/GFDZ. Accessed February 16, 2012, 02:49. |