To cite package ‘CREDS’ in publications use:

  Islam D, Yeasin D, Muruganandam D, Madhu D (2022). _CREDS: Calibrated
  Ratio Estimator under Double Sampling Design_. R package version
  0.1.0, <https://CRAN.R-project.org/package=CREDS>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {CREDS: Calibrated Ratio Estimator under Double Sampling Design},
    author = {Dr. Sadikul Islam and Dr. Md Yeasin and Dr. M. Muruganandam and Dr. M. Madhu},
    year = {2022},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=CREDS},
  }