Other
Fu Jen University: Different Kinds of Outlines
This site from the Fu Jen University contains information on different types of outlines and gives examples of each. It also gives other information on writing outlines.
Cambridge Rindge & Latin School
Cambridge Rindge & Latin School: Making an Outline
A tip sheet on how to create and outline for a research paper.
University of Ottawa (Canada)
University of Ottawa: Start With an Outline
This site from the University of Ottawa provides a brief, but effective, explanation of how to use a sentence outline to organize and shape your paper.