Cita APA

Wald, N. J., Huttly, W., & Hackshaw, A. K. (2002). Antenatal screening policies for Down's syndrome: Audit of Down's syndrome screening is not valid. BMJ Group.

Chicago Style Citation

Wald, Nicholas J., Wayne Huttly, i Allan K. Hackshaw. Antenatal Screening Policies for Down's Syndrome: Audit of Down's Syndrome Screening Is Not Valid. BMJ Group, 2002.

Cita MLA

Wald, Nicholas J., Wayne Huttly, i Allan K. Hackshaw. Antenatal Screening Policies for Down's Syndrome: Audit of Down's Syndrome Screening Is Not Valid. BMJ Group, 2002.