APA (7th ed.) Citation

Higman, B. (1967). A comparative study of programming languages. Macdonald.

Chicago Style (17th ed.) Citation

Higman, Bryan. A Comparative Study of Programming Languages. London: Macdonald, 1967.

MLA (8th ed.) Citation

Higman, Bryan. A Comparative Study of Programming Languages. Macdonald, 1967.