Hayes, A. S. (1963). Language laboratory facilities: Technical guide for the selection, purchase, use and maintenance. U.S. Department of Health, Education and Welfare, Office of Education.
Cita Chicago Style (17a ed.)Hayes, Alfred S. Language Laboratory Facilities: Technical Guide for the Selection, Purchase, Use and Maintenance. Washington: U.S. Department of Health, Education and Welfare, Office of Education, 1963.
Cita MLA (9a ed.)Hayes, Alfred S. Language Laboratory Facilities: Technical Guide for the Selection, Purchase, Use and Maintenance. U.S. Department of Health, Education and Welfare, Office of Education, 1963.
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