Cita APA (7a ed.)

Kallio, M., Propoj, A. I., & Seppälä, R. (1985). A model for the forest sector. International Institute for Applied Systems Analysis.

Cita Chicago Style (17a ed.)

Kallio, Markku, Anatolij Ivanovič Propoj, y Risto Seppälä. A Model for the Forest Sector. Laxenburg: International Institute for Applied Systems Analysis, 1985.

Cita MLA (9a ed.)

Kallio, Markku, et al. A Model for the Forest Sector. International Institute for Applied Systems Analysis, 1985.