| APA | GUUI. (2012, February 16). In Acronym Geek. Retrieved 17:56, February 16, 2012, from http://www.acronymgeek.com/GUUI |
| MLA | "GUUI." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/GUUI>. |
| MHRA | 'GUUI', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/GUUI> [accessed 16 February 2012] |
| Chicago | "GUUI", http://www.acronymgeek.com/GUUI (accessed February 16, 2012). |
| CBE/CSE | GUUI [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/GUUI. |
| Bluebook | GUUI, http://www.acronymgeek.com/GUUI (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GUUI, http://www.acronymgeek.com/GUUI (optional description here) (as of Feb. 16, 2012, 17:56). |
| AMA | GUUI. Acronym Geek. February 16, 2012, 17:56. Available at: http://www.acronymgeek.com/GUUI. Accessed February 16, 2012, 17:56. |