"Just need one or two quick citations and not an entire source list? NoodleBib Express includes all of the citation forms (MLA, APA, and Chicago/Turabian) available in the subscription version. The difference? Your citations are not compiled into a source list and cannot be saved -- you'll copy and paste the citation you create into your document."
MLA, APA, Turabian & Chicago styles -- "helps students and professional researchers to properly credit the information that they use. Its primary goal is to make it so easy for student researchers to cite their information sources, that there is virtually no reason not to -- because...
SOMEDAY THE INFORMATION THAT SOMEONE ELSE WANTS TO USE... WILL BE YOURS!"
An application that collects, manages, and cites research sources. It's easy to use, connects with your web browser to download sources, and best of all it's free. Zotero allows you to attach PDFs, notes and images to your citations, organize them into collections for different projects, and create bibliographies.