| APA | GXO. (2012, February 15). In Acronym Geek. Retrieved 03:14, February 15, 2012, from http://www.acronymgeek.com/GXO |
| MLA | "GXO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/GXO>. |
| MHRA | 'GXO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/GXO> [accessed 15 February 2012] |
| Chicago | "GXO", http://www.acronymgeek.com/GXO (accessed February 15, 2012). |
| CBE/CSE | GXO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/GXO. |
| Bluebook | GXO, http://www.acronymgeek.com/GXO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GXO, http://www.acronymgeek.com/GXO (optional description here) (as of Feb. 15, 2012, 03:14). |
| AMA | GXO. Acronym Geek. February 15, 2012, 03:14. Available at: http://www.acronymgeek.com/GXO. Accessed February 15, 2012, 03:14. |