APA (7th ed.) Citation

Jensen, U. J., Jensen, U. J., & Harré, R. (1981). The philosophy of evolution. Harvester studies in philosophy.

Chicago Style (17th ed.) Citation

Jensen, Uffe J., U. J. Jensen, and R. Harré. "The Philosophy of Evolution." Harvester Studies in Philosophy 1981.

MLA (9th ed.) Citation

Jensen, Uffe J., et al. "The Philosophy of Evolution." Harvester Studies in Philosophy, 1981.