| APA | PCI. (2012, February 4). In Acronym Geek. Retrieved 11:35, February 4, 2012, from http://www.acronymgeek.com/PCI |
| MLA | "PCI." Acronym Geek. (2012). Acronym Geek. 4 Feb 2012 <http://www.acronymgeek.com/PCI>. |
| MHRA | 'PCI', Acronym Geek, 4 February 2012, <http://www.acronymgeek.com/PCI> [accessed 4 February 2012] |
| Chicago | "PCI", http://www.acronymgeek.com/PCI (accessed February 4, 2012). |
| CBE/CSE | PCI [Internet]. Acronym Geek; 2012 Feb 4 [cited 2012 Feb 4]. Available from: http://www.acronymgeek.com/PCI. |
| Bluebook | PCI, http://www.acronymgeek.com/PCI (last visited February 4, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PCI, http://www.acronymgeek.com/PCI (optional description here) (as of Feb. 4, 2012, 11:35). |
| AMA | PCI. Acronym Geek. February 4, 2012, 11:35. Available at: http://www.acronymgeek.com/PCI. Accessed February 4, 2012, 11:35. |