Hayes, Patrick
Mathematical methods in the social and managerial sciences
John Wiley & Sons, 1975
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Boas, Mary L.
Mathematical methods in the physical sciences
John Wiley & Sons, 2006
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Boas, Mary L.
Mathematical methods in the physical sciences
John Wiley & Sons, 1983
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Potter, Merle C.
Mathematical methods in the physical sciences
Prentice-Hall, 1978
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Research methods in the social sciences
edited, Bridget Somekh, Cathy Lewin
Sage Publications , 2005
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