Hedrick, T. E. (1993). Applied research design: A practical guide. Sage.
Chicagoスタイル(17版)引用形式Hedrick, Terry E. Applied Research Design: A Practical Guide. Newbury Park, California: Sage, 1993.
MLA(9版)引用形式Hedrick, Terry E. Applied Research Design: A Practical Guide. Sage, 1993.
警告: この引用は必ずしも正確ではありません.