Statistics can enhance a speech and make a stronger case for your perspective.
Statistics measure facts and reported data. Polls try to measure people's opinions on a topic.
MLA (Modern Language Association) Style is primarily used for the humanities - English, philosophy, music, religion - but can also be used in other subjects.
MLA Handbook for Writers of Research Papers by 
MLA Handbook 8th Edition by 
Giving a presentation on "how to" do something? The following links can help with step-by-step instructions on a variety of topics.
Quotations can help to make a point or provoke thought and discussion. These resources can be found in the reference stacks on the 1st floor of the library, or by clicking on the link:
The Oxford Dictionary of Quotations by 
Bloomsbury Biographical Dictionary of Quotations
Bloomsbury Thematic Dictionary of Quotations
Rawson's Dictionary of American Quotations