There are two elements to every citation:
(Note: These are just two examples. Always check a current citation guide for the style your instructor requires for proper formatting.)
1. In-Text citation (APA) or Footnote/Endnote (Chicago)
This is where you identify the material you are using in your paper.
Chicago Footnote Style:
2. Works Cited Page or Footnote Citations
This is where you list, in alphabetical order, the complete citations for all the sources you noted in your in-text citations, for styles like APA.
Or, for the Chicago notes style, format the full citation in the note as such.
Ask your instructor which style they want you to use. If they have no preference, you can use the one intended for your discipline.