You are supposed cite paraphrasings. If I say "A key concept in the philosophy of Existentialism is that awareness of one's own free is an uncomfortable experie

You are supposed cite paraphrasings. If I say "A key concept in the philosophy of Existentialism is that awareness of one's own free is an uncomfortable experience, characterized by the three feelings of despair, forelorness, and anguish", then I should have an in-text citation (a footnote in the Chicago style, one of those parentheticals in MLA) referring to Sartre's Existentialism is a Humanism essay.