APA (7th ed.) Citation

Schuster, E. H., Rico, G., Goddard, N., Paiko, P. f., Zettl, H., & Slothower, W. (1975). American english today: The tools of english (2nd.). McGraw hill book company.

Chicago Style (17th ed.) Citation

Schuster, Edgar H., Gabriele Rico, Nettye Goddard, Peggy fisk Paiko, Herbert Zettl, and William Slothower. American English Today: The Tools of English. 2nd. New York USA: McGraw hill book company, 1975.

MLA (9th ed.) Citation

Schuster, Edgar H., et al. American English Today: The Tools of English. 2nd. McGraw hill book company, 1975.