Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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