| APA | GYOS. (2012, February 16). In Acronym Geek. Retrieved 10:04, February 16, 2012, from http://www.acronymgeek.com/GYOS |
| MLA | "GYOS." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/GYOS>. |
| MHRA | 'GYOS', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/GYOS> [accessed 16 February 2012] |
| Chicago | "GYOS", http://www.acronymgeek.com/GYOS (accessed February 16, 2012). |
| CBE/CSE | GYOS [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/GYOS. |
| Bluebook | GYOS, http://www.acronymgeek.com/GYOS (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GYOS, http://www.acronymgeek.com/GYOS (optional description here) (as of Feb. 16, 2012, 10:04). |
| AMA | GYOS. Acronym Geek. February 16, 2012, 10:04. Available at: http://www.acronymgeek.com/GYOS. Accessed February 16, 2012, 10:04. |