Turabian's A Manual for Writers of Research Papers, Theses, and Dissertations (aka Turabian) is described by the publisher and also regarded as "the gold standard for college and graduate students in virtually all academic areas. An introduction to Chicago-style formatting and citation generation, the manual aids students in clear writing, citing, and research practice." In other words, it is an authoritative interpretation of the Chicago Manual of Style for researchers.
It has two different types of styles: Notes and Bibliography Style, and Author-Date Style. Notes and Bibliography Style is typically used within the humanities including literature, history, and the arts. The Author-Dates Style is primarily used within the physical, natural, and social sciences.
This guide only deals with the Notes and Bibliography Style.
Turabian style uses footnotes. Footnotes should be handled by your word processor and not something you just try to put in the footer. The footnote should be in the same font, Times New Roman, but in 10 point font, as opposed to the 12 point font of the body of the paper. The content of the footnote depends on source and if it is the first time the resource is cited. The second, and following citation, the note is shortened greatly.
Here are some helps from out on the internet. I cannot testify to their accuracy, but they may help with some citations and formatting questions.