| APA | LPI. (2012, February 9). In Acronym Geek. Retrieved 02:23, February 9, 2012, from http://www.acronymgeek.com/LPI |
| MLA | "LPI." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/LPI>. |
| MHRA | 'LPI', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/LPI> [accessed 9 February 2012] |
| Chicago | "LPI", http://www.acronymgeek.com/LPI (accessed February 9, 2012). |
| CBE/CSE | LPI [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/LPI. |
| Bluebook | LPI, http://www.acronymgeek.com/LPI (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, LPI, http://www.acronymgeek.com/LPI (optional description here) (as of Feb. 9, 2012, 02:23). |
| AMA | LPI. Acronym Geek. February 9, 2012, 02:23. Available at: http://www.acronymgeek.com/LPI. Accessed February 9, 2012, 02:23. |