Hayes, A. S. (1968). Language laboratory facilities: Technical guide for their selection, purchase, use and maintenance. Oxford University Press.
Cita Chicago Style (17a ed.)Hayes, A. S. Language Laboratory Facilities: Technical Guide for Their Selection, Purchase, Use and Maintenance. London: Oxford University Press, 1968.
Cita MLA (8a ed.)Hayes, A. S. Language Laboratory Facilities: Technical Guide for Their Selection, Purchase, Use and Maintenance. Oxford University Press, 1968.
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