APA (7th ed.) Citation

Godet, M., Bourse, F., Chapuy, P., & Menant, I. (1991). Future studies: A tool-box for problem solving. Unesco.

Chicago Style (17th ed.) Citation

Godet, Michel, F. Bourse, P. Chapuy, and I. Menant. Future Studies: A Tool-box for Problem Solving. París: Unesco, 1991.

MLA (9th ed.) Citation

Godet, Michel, et al. Future Studies: A Tool-box for Problem Solving. Unesco, 1991.