APA (7th ed.) Citation

Gairns & Redman. (2000). Natural English: Pre-intermediate student's book. Oxford University Press.

Chicago Style (17th ed.) Citation

Gairns and Redman. Natural English: Pre-intermediate Student's Book. Oxford: Oxford University Press, 2000.

MLA (8th ed.) Citation

Gairns and Redman. Natural English: Pre-intermediate Student's Book. Oxford University Press, 2000.