Kothari, C. (1990). Research methodology /2e: Methods and techniques (2nd Ed.). New Age International.
Chicago ZitierstilKothari, C.R. Research Methodology /2e: Methods and Techniques. 2nd Ed. New Delhi: New Age International, 1990.
MLA ZitierstilKothari, C.R. Research Methodology /2e: Methods and Techniques. 2nd Ed. New Age International, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.