APA (7th ed.) Citation

Sands, M., & Kerry, T. (1982). Mixed ability teaching. Croom Helm.

Chicago Style (17th ed.) Citation

Sands, Margaret, and Trevor Kerry. Mixed Ability Teaching. London [England]: Croom Helm, 1982.

MLA (9th ed.) Citation

Sands, Margaret, and Trevor Kerry. Mixed Ability Teaching. Croom Helm, 1982.