In this study, we aimed at demonstrating, by means of a multi-case study, the main business coordination structures in the state of São Paulo, used by orange packing houses for purchasing fruit from citrus farmers. We verify that the most representative governance structure in orange purchase is the hybrid or contractual form, in which the contracts are complemented by reputation and, in regions with higher competition for orange purchase, as well as by arrangements characterized as relation networks, which are more flexible, non-formalized and of higher complexity than the simple formal contract.