This document discusses several perspectives on interorganizational relationships: - Resource-dependence theory states that organizations try to control external resources to minimize dependence on other organizations. Forms of control include ownership, contracts, and mergers. - The collaborative network perspective argues that companies can join together to share resources and become more competitive. - The population ecology perspective focuses on how organizations adapt and compete for resources within a population of similar organizations. - The institutional perspective views organizations as conforming to social norms and values through mimetic, coercive, and normative forces from stakeholders.