Cita APA

Clarke, E. A., & Hilditch, S. (1983). Problems in determining the incidence of cervical cancer.

Citación estilo Chicago

Clarke, E. A., y S. Hilditch. Problems in Determining the Incidence of Cervical Cancer. 1983.

Cita MLA

Clarke, E. A., y S. Hilditch. Problems in Determining the Incidence of Cervical Cancer. 1983.