APA-viite (7. p.)

Kothari,C.R. (2019). Research Methodology: Methods and Techniques (4th.). New Age International Publishers.

Chicago-viite (17. p.)

Kothari,C.R. Research Methodology: Methods and Techniques. 4th. New Age International Publishers, 2019.

MLA-viite (9. p.)

Kothari,C.R. Research Methodology: Methods and Techniques. 4th. New Age International Publishers, 2019.

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