APA (7th ed.) Citation

Simpson, R. D. (1999). Productivity in natural resource industries: Improvement through innovation. Resources for the Future.

Chicago Style (17th ed.) Citation

Simpson, Ralph David. Productivity in Natural Resource Industries: Improvement Through Innovation. Washington, D.C.: Resources for the Future, 1999.

MLA (8th ed.) Citation

Simpson, Ralph David. Productivity in Natural Resource Industries: Improvement Through Innovation. Resources for the Future, 1999.