Make sure you use http://citationmachine.net for assistance with correctly writing your citations and references. If you choose to use Word, make sure it is a 2010 or later edition, with APA 6th edition updates.
Here are sample papers written using APA 6th edition:
http://language.southmountaincc.edu/NR/rdonlyres/B416157A-1AF2-431C-A92B-E38CC6AAA88F/4683/APASamplePaper093.pdf
http://www.apastyle.org/manual/related/sample-experiment-paper-1.pdf
