| APA | GYCO. (2012, February 15). In Acronym Geek. Retrieved 15:53, February 15, 2012, from http://www.acronymgeek.com/GYCO |
| MLA | "GYCO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/GYCO>. |
| MHRA | 'GYCO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/GYCO> [accessed 15 February 2012] |
| Chicago | "GYCO", http://www.acronymgeek.com/GYCO (accessed February 15, 2012). |
| CBE/CSE | GYCO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/GYCO. |
| Bluebook | GYCO, http://www.acronymgeek.com/GYCO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GYCO, http://www.acronymgeek.com/GYCO (optional description here) (as of Feb. 15, 2012, 15:53). |
| AMA | GYCO. Acronym Geek. February 15, 2012, 15:53. Available at: http://www.acronymgeek.com/GYCO. Accessed February 15, 2012, 15:53. |