APA (7th ed.) Citation

IFIP Working Conference on Formal Language Description Languages Vienna, Austria, IFIP Technical Committee 2--Programming, & Steel, T. B. (1971). Formal language description languages for computer programming: Proceedings. North-Holland.

Chicago Style (17th ed.) Citation

IFIP Working Conference on Formal Language Description Languages Vienna, Austria, IFIP Technical Committee 2--Programming, and T. B. Steel. Formal Language Description Languages for Computer Programming: Proceedings. Amsterdam: North-Holland, 1971.

MLA (8th ed.) Citation

IFIP Working Conference on Formal Language Description Languages Vienna, Austria, et al. Formal Language Description Languages for Computer Programming: Proceedings. North-Holland, 1971.