Person data or event data.

Dj, H. (1980). Person data or event data. PubMed, 21(1), 11–2.

Dj, Hall. “Person data or event data.” PubMed, vol. 21, no. 1, 1980, pp. 11–2.

Dj, Hall. 1980. “Person data or event data.” PubMed 21 (1): 11–2.

Dj, H. (1980) ‘Person data or event data’, PubMed, 21(1), pp. 11–2.

@article{dj1980person,
  title = {{Person data or event data.}},
  author = {Dj, Hall},
  journal = {PubMed},
  volume = {21},
  number = {1},
  pages = {11--2},
  year = {1980}
}