| APA | ZAK. (2012, February 11). In Acronym Geek. Retrieved 22:44, February 11, 2012, from http://www.acronymgeek.com/ZAK |
| MLA | "ZAK." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/ZAK>. |
| MHRA | 'ZAK', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/ZAK> [accessed 11 February 2012] |
| Chicago | "ZAK", http://www.acronymgeek.com/ZAK (accessed February 11, 2012). |
| CBE/CSE | ZAK [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/ZAK. |
| Bluebook | ZAK, http://www.acronymgeek.com/ZAK (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZAK, http://www.acronymgeek.com/ZAK (optional description here) (as of Feb. 11, 2012, 22:44). |
| AMA | ZAK. Acronym Geek. February 11, 2012, 22:44. Available at: http://www.acronymgeek.com/ZAK. Accessed February 11, 2012, 22:44. |