MLA

Perez, E, et al. The Role of Personal Information Sources On the Decision-making Process of Costa Rican Farmers. Costa Rica, 2003.

APA

Perez, E., Solano, C., Leon, H., & Herrero, M. (2003). The role of personal information sources on the decision-making process of Costa Rican farmers. Costa Rica.

Chicago

Perez, E., C Solano, H Leon, and M Herrero. The Role of Personal Information Sources On the Decision-Making Process of Costa Rican Farmers. Costa Rica, 2003.