APA (7th ed.) Citation

Powell, M. K., Smith, D., & Newton, D. (1981). Exploration (4. impression.). Schofield & Sims.

Chicago Style (17th ed.) Citation

Powell, Melvyn K., David Smith, and Derek Newton. Exploration. 4. impression. Huddersfield: Schofield & Sims, 1981.

MLA (9th ed.) Citation

Powell, Melvyn K., et al. Exploration. 4. impression. Schofield & Sims, 1981.