Cita APA (7th ed.)
Higman, B., & Ziegler, V. (1972). Programmiersprachen: A comparative study of programming languages. Eine vergleichende Studie. Hanser.
Cita Chicago (17th ed.)
Higman, Bryan, i Viktor Ziegler. Programmiersprachen: A Comparative Study of Programming Languages. Eine Vergleichende Studie. München: Hanser, 1972.
Cita MLA (9th ed.)
Higman, Bryan, i Viktor Ziegler. Programmiersprachen: A Comparative Study of Programming Languages. Eine Vergleichende Studie. Hanser, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.