Cita APA (7a ed.)

Cleverdon, C. W. Factors determining the performance of indexing systems.

Cita Chicago Style (17a ed.)

Cleverdon, Cyril W. Factors Determining the Performance of Indexing Systems. Cranfield [Eng.] 1966-.

Cita MLA (9a ed.)

Cleverdon, Cyril W. Factors Determining the Performance of Indexing Systems.