APA-ийн эшлэл(7 дахь хэвлэлт)

Creswell, J. W. (1994). Research design qualitative & quantitative approaches. Sage.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Creswell, John W. Research Design Qualitative & Quantitative Approaches. London: Sage, 1994.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Creswell, John W. Research Design Qualitative & Quantitative Approaches. Sage, 1994.