Scanbot - Scanbot is a mobile app that allows you to use your device's camera as a document scanner. The app is capable of scanning a large number of source materials, and it can handle QR codes as well.
Citationsy BookScanner - Scan the barcodes on the backs of books to cite them
Scanner Pro - Scanner Pro turns your iPhone into portable scanner in your pocket.
Citationsy - Citationsy is a reference tool to create citations, reference lists, and bibliographies.
Genius Scan - On The Go.
Formatically EDU - A simple, beautiful, and fast citation manager for teachers