APA   Click to copy
Collaborators, G. B. D. (2021). The global burden of adolescent and young adult cancer in 2019: a systematic analysis for the Global Burden of Disease Study 2019. The Lancet. Oncology.

Chicago/Turabian   Click to copy
Collaborators, GBD. “The Global Burden of Adolescent and Young Adult Cancer in 2019: a Systematic Analysis for the Global Burden of Disease Study 2019.” The Lancet. Oncology (2021).

MLA   Click to copy
Collaborators, G. BD. “The Global Burden of Adolescent and Young Adult Cancer in 2019: a Systematic Analysis for the Global Burden of Disease Study 2019.” The Lancet. Oncology, 2021.

@article{gbd2021a,
  title = {The global burden of adolescent and young adult cancer in 2019: a systematic analysis for the Global Burden of Disease Study 2019},
  year = {2021},
  journal = {The Lancet. Oncology},
  author = {Collaborators, GBD}
}