APA (7th ed.) Citation

Kail, P. A. C. (1989). Forth: A complete course in the Forth programming language. Kogan Page.

Chicago Style (17th ed.) Citation

Kail, Paul A. C. Forth: A Complete Course in the Forth Programming Language. London: Kogan Page, 1989.

MLA (9th ed.) Citation

Kail, Paul A. C. Forth: A Complete Course in the Forth Programming Language. Kogan Page, 1989.