APA (7th ed.) Citation

Armstrong, D. M. (1963). Perception and the physical world. Routledge and Paul.

Chicago Style (17th ed.) Citation

Armstrong, D. M. Perception and the Physical World. London: Routledge and Paul, 1963.

MLA (9th ed.) Citation

Armstrong, D. M. Perception and the Physical World. Routledge and Paul, 1963.