APA (7th ed.) Citation

Gregersen, H. M., Lundgren, A. L., & Bengston, D. N. (1990). Planning and managing forestry research: Guidelines for managers. FAO.

Chicago Style (17th ed.) Citation

Gregersen, H. M., Allen L. Lundgren, and David N. Bengston. Planning and Managing Forestry Research: Guidelines for Managers. Rome: FAO, 1990.

MLA (9th ed.) Citation

Gregersen, H. M., et al. Planning and Managing Forestry Research: Guidelines for Managers. FAO, 1990.