The sources on your references page should be listed in alphabetical order and should have a hanging indent, which means that each line of a citation after the first should be indented 5 spaces. To create a hanging indent in Microsoft Word, just highlight the citation and click on the down arrow next to the word Paragraph in the toolbar.
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When the Paragraph window opens, go down to the Special selector and choose hanging.
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Click OK and you are all set! You can also do this to all of your citations at once.