If you finish a sentence but put a parenthetical reference for the reader to use as a resource at the end of the sentence do you put a period at the end of the sentence?

Answer 1

Yes. Your end punctuation will come after the closed parenthetical.

Example:

This is a good category (Quotation Marks, Brackets, and Parentheses).

Answer 2

Yes, you would still put a period at the end of the sentence even if it includes a parenthetical reference. The period indicates the end of the sentence's main thought, and the parenthetical reference is additional information for the reader's benefit.