APA Edition Citation

Lancaster, F. W. (1968). Information retrieval systems: Characteristics,testing and evaluation.

Chicago Edition Citation

Lancaster, F. Wilfrid. Information Retrieval Systems: Characteristics,testing and Evaluation. 1968.

MLA Edition Citation

Lancaster, F. Wilfrid. Information Retrieval Systems: Characteristics,testing and Evaluation. 1968.

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