| APA | GRF. (2012, February 14). In Acronym Geek. Retrieved 06:39, February 14, 2012, from http://www.acronymgeek.com/GRF |
| MLA | "GRF." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GRF>. |
| MHRA | 'GRF', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GRF> [accessed 14 February 2012] |
| Chicago | "GRF", http://www.acronymgeek.com/GRF (accessed February 14, 2012). |
| CBE/CSE | GRF [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GRF. |
| Bluebook | GRF, http://www.acronymgeek.com/GRF (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GRF, http://www.acronymgeek.com/GRF (optional description here) (as of Feb. 14, 2012, 06:39). |
| AMA | GRF. Acronym Geek. February 14, 2012, 06:39. Available at: http://www.acronymgeek.com/GRF. Accessed February 14, 2012, 06:39. |