Cita APA

Barrett, J. F. R., Thornton, S., & Barron, S. L. (1991). Rapid one step urine tests in early pregnancy.

Chicago Style Citation

Barrett, J F R., S. Thornton, i S L. Barron. Rapid One Step Urine Tests in Early Pregnancy. 1991.

Cita MLA

Barrett, J F R., S. Thornton, i S L. Barron. Rapid One Step Urine Tests in Early Pregnancy. 1991.

Atenció: Aquestes cites poden no estar 100% correctes.