APA (7th ed.) Citation

Bookstein, A., & Cooper, W. (1976). A General Mathematical Model for Information Retrieval Systems.

Chicago Style (17th ed.) Citation

Bookstein, Abraham, and William Cooper. A General Mathematical Model for Information Retrieval Systems. 1976.

MLA (9th ed.) Citation

Bookstein, Abraham, and William Cooper. A General Mathematical Model for Information Retrieval Systems. 1976.

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