“…Research on farmers' preferences for coffee certification in Indonesia is still very limited. According to previous studies, several certification attributes affect farmers' preferences on contract farming such as input supply [13,31,32], technical assistance or agricultural training [10,13,15,31,33], quality of product [10,13,33], price options or premium price [5,10,13,31,33], selling agreement [5,10], monitoring [31,34].The following are some studies that can be used as references. Ibnu et al [5] conducted research on preferences for coffee certification using Conjoint Analysis.…”