APA (7th ed.) Citation

Lehnert, W. G. (1978). The process of question answering: A computer simulation of cognition. L. Erlbaum Associates.

Chicago Style (17th ed.) Citation

Lehnert, Wendy G. The Process of Question Answering: A Computer Simulation of Cognition. Hillsdale, N.J.: L. Erlbaum Associates, 1978.

MLA (9th ed.) Citation

Lehnert, Wendy G. The Process of Question Answering: A Computer Simulation of Cognition. L. Erlbaum Associates, 1978.