APA (7th ed.) Citation

Howson, C. (1997). Logic With Trees: An introduction to symbolic logic. Routledge.

Chicago Style (17th ed.) Citation

Howson, Colin. Logic With Trees: An Introduction to Symbolic Logic. London: Routledge, 1997.

MLA (9th ed.) Citation

Howson, Colin. Logic With Trees: An Introduction to Symbolic Logic. Routledge, 1997.