APA (7th ed.) Citation

Hepworth, T. S. (1971). Dyslexia: The problem of reading retardation. Angus and Robertson.

Chicago Style (17th ed.) Citation

Hepworth, T. S. Dyslexia: The Problem of Reading Retardation. Sydney: Angus and Robertson, 1971.

MLA (9th ed.) Citation

Hepworth, T. S. Dyslexia: The Problem of Reading Retardation. Angus and Robertson, 1971.