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 (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.