Kamolova Muxlisa Khudoyberdiyevna, and Soliev Muzaffar Furkat o`g`li. “Main Requirements of the O’zDSt ISO\IEC Standard 17021:2009”. Texas Journal of Engineering and Technology, vol. 8, May 2022, pp. 4-9, https://zienjournals.com/index.php/tjet/article/view/1530.