Auto Citation Software for OS X or PC

I would like to have a software developed. The software would (when enabled) automatically add citation / bibliography at the end of the word-processing document which the user is working in. It would also add in-line citations and have various options for citations styles such as MLA, APA, CMS, and so on. I would also like some anti-piracy options such as auto-generated license keys upon online purchase or online verification to eliminate piracy. I would like it to be available for both OS X and Windows but OS X is more important if we need to start there.