APA (7th ed.) Citation

Husen, T., & Keeves, J. P. (1990). Issues in science education: Science competence in social and ecological context. Pergamon.

Chicago Style (17th ed.) Citation

Husen, Torsten, and John P. Keeves. Issues in Science Education: Science Competence in Social and Ecological Context. Oxford: Pergamon, 1990.

MLA (9th ed.) Citation

Husen, Torsten, and John P. Keeves. Issues in Science Education: Science Competence in Social and Ecological Context. Pergamon, 1990.