| APA | GUIF. (2012, February 17). In Acronym Geek. Retrieved 03:39, February 17, 2012, from http://www.acronymgeek.com/GUIF |
| MLA | "GUIF." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/GUIF>. |
| MHRA | 'GUIF', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/GUIF> [accessed 17 February 2012] |
| Chicago | "GUIF", http://www.acronymgeek.com/GUIF (accessed February 17, 2012). |
| CBE/CSE | GUIF [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/GUIF. |
| Bluebook | GUIF, http://www.acronymgeek.com/GUIF (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GUIF, http://www.acronymgeek.com/GUIF (optional description here) (as of Feb. 17, 2012, 03:39). |
| AMA | GUIF. Acronym Geek. February 17, 2012, 03:39. Available at: http://www.acronymgeek.com/GUIF. Accessed February 17, 2012, 03:39. |