Walters, M. (1996). Employee attitude and opinion surveys. Institute of Personnel and Development.
Lua i Stíl Chicago (17ú heag.)Walters, Mike. Employee Attitude and Opinion Surveys. [London]: Institute of Personnel and Development, 1996.
Lua MLA (9ú heag.)Walters, Mike. Employee Attitude and Opinion Surveys. Institute of Personnel and Development, 1996.
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