Prep books for the social sciences often categorize various concepts and terms in different ways that don't always make sense. I think you're making this a little more black and white than it needs to be. A perspective is the equivalent of the lens through which one views the world. A theory is a proposed explanation for a phenomenon. Don't worry about which is a perspective vs. a theory and which perspectives are a result of which theories; it's neither important nor practical. Just be able to apply each perspective or theory to a real-world situation.