| APA | GYPO. (2012, February 16). In Acronym Geek. Retrieved 17:02, February 16, 2012, from http://www.acronymgeek.com/GYPO |
| MLA | "GYPO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/GYPO>. |
| MHRA | 'GYPO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/GYPO> [accessed 16 February 2012] |
| Chicago | "GYPO", http://www.acronymgeek.com/GYPO (accessed February 16, 2012). |
| CBE/CSE | GYPO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/GYPO. |
| Bluebook | GYPO, http://www.acronymgeek.com/GYPO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GYPO, http://www.acronymgeek.com/GYPO (optional description here) (as of Feb. 16, 2012, 17:02). |
| AMA | GYPO. Acronym Geek. February 16, 2012, 17:02. Available at: http://www.acronymgeek.com/GYPO. Accessed February 16, 2012, 17:02. |