Stewart, Rosemary
Contrasts in management
McGraw-Hill, 1976
 Buku Teks
Gaster, Lucy, 1940-
Quality in public services : managers' choices
Open University Press, 1995
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Knoll, Robert E.
Contrasts
Harcourt, Brace and Company, 1959
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Coulmas, Florian
Sociolinguistics:the study of speakers choices
Cambridge University Press, 2005
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Sashkin, Marshall, 1944-
A Managers guide to participative management
American Managemant Association, 1982
 Buku Teks