APA (7th ed.) Citation

United Nations Environment Programme, Coombs, J., & Hall, D. O. (1982). Techniques in bioproductivity and photosynthesis. Pergamon.

Chicago Style (17th ed.) Citation

United Nations Environment Programme, J. Coombs, and D. O. Hall. Techniques in Bioproductivity and Photosynthesis. Oxford: Pergamon, 1982.

MLA (9th ed.) Citation

United Nations Environment Programme, et al. Techniques in Bioproductivity and Photosynthesis. Pergamon, 1982.