| APA | ASTR. (2012, February 12). In Acronym Geek. Retrieved 00:23, February 12, 2012, from http://www.acronymgeek.com/ASTR |
| MLA | "ASTR." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/ASTR>. |
| MHRA | 'ASTR', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/ASTR> [accessed 12 February 2012] |
| Chicago | "ASTR", http://www.acronymgeek.com/ASTR (accessed February 12, 2012). |
| CBE/CSE | ASTR [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/ASTR. |
| Bluebook | ASTR, http://www.acronymgeek.com/ASTR (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ASTR, http://www.acronymgeek.com/ASTR (optional description here) (as of Feb. 12, 2012, 00:23). |
| AMA | ASTR. Acronym Geek. February 12, 2012, 00:23. Available at: http://www.acronymgeek.com/ASTR. Accessed February 12, 2012, 00:23. |