Tashakkori, Abbas
Teddlie, Charles
Mixed methodology : combining qualitative and quantitative approaches / Abbas Tashakkori and Charles Teddlie . - Thousand Oaks (CA) : Sage, 1998 . - XI,183 p . - (Applied social research methods series ; 46)



ISBN 0-7619-0070-5.

Metodologia de investigação
Investigação em ciências sociais

CDU 303