H. R. Ganesha, Aithal P. S. Choosing an Appropriate Data Collection Instrument and Checking for the Calibration, Validity, and Reliability of Data Collection Instrument Before Collecting the Data During Ph.D. Program in India. IJMTS [Internet]. 2022 Nov. 10 [cited 2024 Nov. 22];7(2):497-513. Available from: https://srinivaspublication.com/journal/index.php/ijmts/article/view/1958