| APA | XLPO. (2012, February 16). In Acronym Geek. Retrieved 00:49, February 16, 2012, from http://www.acronymgeek.com/XLPO |
| MLA | "XLPO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/XLPO>. |
| MHRA | 'XLPO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/XLPO> [accessed 16 February 2012] |
| Chicago | "XLPO", http://www.acronymgeek.com/XLPO (accessed February 16, 2012). |
| CBE/CSE | XLPO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/XLPO. |
| Bluebook | XLPO, http://www.acronymgeek.com/XLPO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XLPO, http://www.acronymgeek.com/XLPO (optional description here) (as of Feb. 16, 2012, 00:49). |
| AMA | XLPO. Acronym Geek. February 16, 2012, 00:49. Available at: http://www.acronymgeek.com/XLPO. Accessed February 16, 2012, 00:49. |