| APA | 997. (2012, February 11). In Acronym Geek. Retrieved 22:52, February 11, 2012, from http://www.acronymgeek.com/997 |
| MLA | "997." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/997>. |
| MHRA | '997', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/997> [accessed 11 February 2012] |
| Chicago | "997", http://www.acronymgeek.com/997 (accessed February 11, 2012). |
| CBE/CSE | 997 [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/997. |
| Bluebook | 997, http://www.acronymgeek.com/997 (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 997, http://www.acronymgeek.com/997 (optional description here) (as of Feb. 11, 2012, 22:52). |
| AMA | 997. Acronym Geek. February 11, 2012, 22:52. Available at: http://www.acronymgeek.com/997. Accessed February 11, 2012, 22:52. |