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Reed College has provided several modified versions of APA, MLA, and Chicago. Click on the name of the style you want to download under the Styles Recommended by Reed section. Place the style in the directory of your paper.
Quick summary: Click the Cite button in the light blue bar above your search results. A box will come up that will walk you through citing the resource(s). Select BibTeX as your citation style, then press the orange "Change" button. Copy the citation to your .bib file. NOTE THAT YOU WILL NEED TO PROVIDE THE IDENTIFIERS FOR EXPORTED CITATIONS.