Kothari, C. R. (1990). Research methodology: Methods and techniques (Second edition & Revised edition.). New Age; Wishwa Prakashan.
Citace podle Chicago (17th ed.)Kothari, C. R. Research Methodology: Methods and Techniques. Second edition & Revised edition. New Delhi: New Age; Wishwa Prakashan, 1990.
Citace podle MLA (8th ed.)Kothari, C. R. Research Methodology: Methods and Techniques. Second edition & Revised edition. New Age; Wishwa Prakashan, 1990.
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