APA (7th ed.) Citation

Bolc, L. (1980). Natural language question answering systems. Hanser ; Macmillan.

Chicago Style (17th ed.) Citation

Bolc, Leonard. Natural Language Question Answering Systems. Munchen : London: Hanser ; Macmillan, 1980.

MLA (9th ed.) Citation

Bolc, Leonard. Natural Language Question Answering Systems. Hanser ; Macmillan, 1980.

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