| APA | G4I. (2012, February 10). In Acronym Geek. Retrieved 09:44, February 10, 2012, from http://www.acronymgeek.com/G4I |
| MLA | "G4I." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/G4I>. |
| MHRA | 'G4I', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/G4I> [accessed 10 February 2012] |
| Chicago | "G4I", http://www.acronymgeek.com/G4I (accessed February 10, 2012). |
| CBE/CSE | G4I [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/G4I. |
| Bluebook | G4I, http://www.acronymgeek.com/G4I (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, G4I, http://www.acronymgeek.com/G4I (optional description here) (as of Feb. 10, 2012, 09:44). |
| AMA | G4I. Acronym Geek. February 10, 2012, 09:44. Available at: http://www.acronymgeek.com/G4I. Accessed February 10, 2012, 09:44. |