APA

Dietz P. M., Adams M. M., Kendrick J. S. & Mathis M. P. (19981218). Completeness of ascertainment of prenatal smoking using birth certificates and confidential questionnaires: variations by maternal attributes and infant birth weight. PRAMS Working Group. Pregnancy Risk Assessment Monitoring System. : American journal of epidemiology.

Chicago

Dietz P M, Adams M M, Kendrick J S and Mathis M P. 19981218. Completeness of ascertainment of prenatal smoking using birth certificates and confidential questionnaires: variations by maternal attributes and infant birth weight. PRAMS Working Group. Pregnancy Risk Assessment Monitoring System. : American journal of epidemiology.

Harvard

Dietz P. M., Adams M. M., Kendrick J. S. and Mathis M. P. (19981218). Completeness of ascertainment of prenatal smoking using birth certificates and confidential questionnaires: variations by maternal attributes and infant birth weight. PRAMS Working Group. Pregnancy Risk Assessment Monitoring System. : American journal of epidemiology.

MLA

Dietz P M, Adams M M, Kendrick J S and Mathis M P. Completeness of ascertainment of prenatal smoking using birth certificates and confidential questionnaires: variations by maternal attributes and infant birth weight. PRAMS Working Group. Pregnancy Risk Assessment Monitoring System. : American journal of epidemiology. 19981218.