APA (7th ed.) Citation

Keats, J. A., Collis, K. F., & Halford, G. S. (1978). Cognitive development: Research based on a neo-Piagetian approach. Wiley.

Chicago Style (17th ed.) Citation

Keats, J. A., Kevin F. Collis, and Graeme S. Halford. Cognitive Development: Research Based on a Neo-Piagetian Approach. Chichester ; New York: Wiley, 1978.

MLA (9th ed.) Citation

Keats, J. A., et al. Cognitive Development: Research Based on a Neo-Piagetian Approach. Wiley, 1978.