| APA | GRX. (2012, February 14). In Acronym Geek. Retrieved 11:37, February 14, 2012, from http://www.acronymgeek.com/GRX |
| MLA | "GRX." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GRX>. |
| MHRA | 'GRX', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GRX> [accessed 14 February 2012] |
| Chicago | "GRX", http://www.acronymgeek.com/GRX (accessed February 14, 2012). |
| CBE/CSE | GRX [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GRX. |
| Bluebook | GRX, http://www.acronymgeek.com/GRX (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GRX, http://www.acronymgeek.com/GRX (optional description here) (as of Feb. 14, 2012, 11:37). |
| AMA | GRX. Acronym Geek. February 14, 2012, 11:37. Available at: http://www.acronymgeek.com/GRX. Accessed February 14, 2012, 11:37. |