APA (7th ed.) Citation

European Association for Research on Learning and Instruction, European Conference for Research on Learning and Instruction, Carretero, M., & Mandl, H. (1990). Learning and instruction: European research in an international context. Pergamon Press.

Chicago Style (17th ed.) Citation

European Association for Research on Learning and Instruction, European Conference for Research on Learning and Instruction, Mario Carretero, and Heinz Mandl. Learning and Instruction: European Research in an International Context. Oxford, England: Pergamon Press, 1990.

MLA (9th ed.) Citation

European Association for Research on Learning and Instruction, et al. Learning and Instruction: European Research in an International Context. Pergamon Press, 1990.