| APA | GSFM. (2012, February 14). In Acronym Geek. Retrieved 21:08, February 14, 2012, from http://www.acronymgeek.com/GSFM |
| MLA | "GSFM." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GSFM>. |
| MHRA | 'GSFM', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GSFM> [accessed 14 February 2012] |
| Chicago | "GSFM", http://www.acronymgeek.com/GSFM (accessed February 14, 2012). |
| CBE/CSE | GSFM [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GSFM. |
| Bluebook | GSFM, http://www.acronymgeek.com/GSFM (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GSFM, http://www.acronymgeek.com/GSFM (optional description here) (as of Feb. 14, 2012, 21:08). |
| AMA | GSFM. Acronym Geek. February 14, 2012, 21:08. Available at: http://www.acronymgeek.com/GSFM. Accessed February 14, 2012, 21:08. |