APA   Click to copy
Hossain, M. A., Kabir, A., & Islam, A. (2021). National quality assurance framework (NQAF). Bangladesh Bureau of Statistics.

Chicago/Turabian   Click to copy
Hossain, Md Alamgir, Ahammad Kabir, and Ariful Islam. National Quality Assurance Framework (NQAF). Bangladesh Bureau of Statistics, 2021.

MLA   Click to copy
Hossain, Md Alamgir, et al. National Quality Assurance Framework (NQAF). Bangladesh Bureau of Statistics, 2021.

@book{md2021a,
  title = {National quality assurance framework (NQAF)},
  year = {2021},
  publisher = {Bangladesh Bureau of Statistics},
  author = {Hossain, Md Alamgir and Kabir, Ahammad and Islam, Ariful}
}