Citação norma APA

Ward, T. (1997). Should oral contraceptive users be screened for factor V Leiden? Oral contraceptives are not the only effective contraceptives.

Citação norma Chicago

Ward, T. Should Oral Contraceptive Users Be Screened for Factor V Leiden? Oral Contraceptives Are Not the Only Effective Contraceptives. 1997.

Citação norma MLA

Ward, T. Should Oral Contraceptive Users Be Screened for Factor V Leiden? Oral Contraceptives Are Not the Only Effective Contraceptives. 1997.

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