APA (7th ed.) Citation

Marcotty, M., & Ledgard, H. F. (1987). The world of programming languages. Springer-Verlag.

Chicago Style (17th ed.) Citation

Marcotty, Michael, and Henry F. Ledgard. The World of Programming Languages. New York: Springer-Verlag, 1987.

MLA (9th ed.) Citation

Marcotty, Michael, and Henry F. Ledgard. The World of Programming Languages. Springer-Verlag, 1987.