| APA | 977. (2012, February 11). In Acronym Geek. Retrieved 22:51, February 11, 2012, from http://www.acronymgeek.com/977 |
| MLA | "977." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/977>. |
| MHRA | '977', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/977> [accessed 11 February 2012] |
| Chicago | "977", http://www.acronymgeek.com/977 (accessed February 11, 2012). |
| CBE/CSE | 977 [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/977. |
| Bluebook | 977, http://www.acronymgeek.com/977 (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 977, http://www.acronymgeek.com/977 (optional description here) (as of Feb. 11, 2012, 22:51). |
| AMA | 977. Acronym Geek. February 11, 2012, 22:51. Available at: http://www.acronymgeek.com/977. Accessed February 11, 2012, 22:51. |