Husen, T., & Keeves, J. P. (1991). Issues in science education: Science competence in social and ecological context. Pergamon.
Čikaški stil citiranja (17. izdanje)Husen, Torsten, i John P. Keeves. Issues in Science Education: Science Competence in Social and Ecological Context. Oxford: Pergamon, 1991.
MLA način citiranja (9. izdanje)Husen, Torsten, i John P. Keeves. Issues in Science Education: Science Competence in Social and Ecological Context. Pergamon, 1991.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.