APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Higman, Bryan. A Comparative Study of Programming Languages. New York: Elsevier Publishing, 1967.

MLA (9th ed.) Citation

Higman, Bryan. A Comparative Study of Programming Languages. Elsevier Publishing, 1967.