| APA | ZRPH. (2012, February 14). In Acronym Geek. Retrieved 13:57, February 14, 2012, from http://www.acronymgeek.com/ZRPH |
| MLA | "ZRPH." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/ZRPH>. |
| MHRA | 'ZRPH', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/ZRPH> [accessed 14 February 2012] |
| Chicago | "ZRPH", http://www.acronymgeek.com/ZRPH (accessed February 14, 2012). |
| CBE/CSE | ZRPH [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/ZRPH. |
| Bluebook | ZRPH, http://www.acronymgeek.com/ZRPH (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ZRPH, http://www.acronymgeek.com/ZRPH (optional description here) (as of Feb. 14, 2012, 13:57). |
| AMA | ZRPH. Acronym Geek. February 14, 2012, 13:57. Available at: http://www.acronymgeek.com/ZRPH. Accessed February 14, 2012, 13:57. |