Leedy, P. D. (2001). Practical research: Planning and design. Merrill Prentice Hall.
Chicago Style CitationLeedy, Paul D. Practical Research: Planning and Design. Merrill Prentice Hall, 2001.
Cita MLALeedy, Paul D. Practical Research: Planning and Design. Merrill Prentice Hall, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.