@article{sample1,
  author    = {Author A and Author B},
  title     = {Title of the paper},
  journal   = {Journal Name},
  year      = {2023},
  volume    = {42},
  number    = {5},
  pages     = {123-456},
}

@book{sample2,
  author    = {Author C},
  title     = {Title of the book},
  publisher = {Publisher Name},
  year      = {2021},
  address   = {City Name},
}