APA (7th ed.) Citation

Hess, F. C., & Holden, J. B. (1967). Chemistry: Made simple. W. H. Allen.

Chicago Style (17th ed.) Citation

Hess, Fred C., and John B. Holden. Chemistry: Made Simple. London: W. H. Allen, 1967.

MLA (8th ed.) Citation

Hess, Fred C., and John B. Holden. Chemistry: Made Simple. W. H. Allen, 1967.