APA (7th ed.) Citation

Derksen, J. A. C. (1973). QA4: A language for artificial intelligence. Stanford Research Institute.

Chicago Style (17th ed.) Citation

Derksen, Jan Antonius Cornelius. QA4: A Language for Artificial Intelligence. Menlo Park: Stanford Research Institute, 1973.

MLA (9th ed.) Citation

Derksen, Jan Antonius Cornelius. QA4: A Language for Artificial Intelligence. Stanford Research Institute, 1973.

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