APA (7th ed.) Citation

Cleverdon, C. W., Mills, J., & Keen, M. (1966). Factors determining the performance of indexing systems. Aslib.

Chicago Style (17th ed.) Citation

Cleverdon, C. W., Jack Mills, and Michael Keen. Factors Determining the Performance of Indexing Systems. Cranfield, Bedfordshire: Aslib, 1966.

MLA (8th ed.) Citation

Cleverdon, C. W., et al. Factors Determining the Performance of Indexing Systems. Aslib, 1966.