Citação norma APA

Szarewski, A., & Kitchener, H. C. (1999). Mortality associated with oral contraceptive use: Confounding might have accounted for results. BMJ Group.

Citação norma Chicago

Szarewski, Anne, and Henry C. Kitchener. Mortality Associated With Oral Contraceptive Use: Confounding Might Have Accounted for Results. BMJ Group, 1999.

Citação norma MLA

Szarewski, Anne, and Henry C. Kitchener. Mortality Associated With Oral Contraceptive Use: Confounding Might Have Accounted for Results. BMJ Group, 1999.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.