Research design

Creswell, John W.. Research design: qualitative, quantitative, and mixed method approaches / John W. Creswell . - 2nd edition . - Thousand Oaks : Sage Publications, 2003 . - xxvi, 246 p. ill. 23 cm.

У книзі штамп.
К.: Бібліогр. в прим. : с. 228-236, Покажчик
0-7619-2442-6