| APA | APPI. (2012, February 10). In Acronym Geek. Retrieved 18:13, February 10, 2012, from http://www.acronymgeek.com/APPI |
| MLA | "APPI." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/APPI>. |
| MHRA | 'APPI', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/APPI> [accessed 10 February 2012] |
| Chicago | "APPI", http://www.acronymgeek.com/APPI (accessed February 10, 2012). |
| CBE/CSE | APPI [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/APPI. |
| Bluebook | APPI, http://www.acronymgeek.com/APPI (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, APPI, http://www.acronymgeek.com/APPI (optional description here) (as of Feb. 10, 2012, 18:13). |
| AMA | APPI. Acronym Geek. February 10, 2012, 18:13. Available at: http://www.acronymgeek.com/APPI. Accessed February 10, 2012, 18:13. |