APA (7th ed.) Citation

Hopcroft, J. E. (1977). Proceedings of the ninth annual ACM symposium on Theory of computing. Association for Computing Machinery.

Chicago Style (17th ed.) Citation

Hopcroft, John E. Proceedings of the Ninth Annual ACM Symposium on Theory of Computing. New York,NY,United States: Association for Computing Machinery, 1977.

MLA (9th ed.) Citation

Hopcroft, John E. Proceedings of the Ninth Annual ACM Symposium on Theory of Computing. Association for Computing Machinery, 1977.

Warning: These citations may not always be 100% accurate.