APA (7th ed.) Citation

Petersen, J. F., Tiittanen, V., Wittfooth, S., Løkkegaard, E., & Friis-Hansen, L. J. Exploring free pregnancy associated plasma protein a (fPAPP-A) as a biomarker in early pregnancy. Elsevier.

Chicago Style (17th ed.) Citation

Petersen, Jesper Friis, Vilma Tiittanen, Saara Wittfooth, Ellen Løkkegaard, and Lennart Jan Friis-Hansen. Exploring Free Pregnancy Associated Plasma Protein a (fPAPP-A) as a Biomarker in Early Pregnancy. Elsevier.

MLA (9th ed.) Citation

Petersen, Jesper Friis, et al. Exploring Free Pregnancy Associated Plasma Protein a (fPAPP-A) as a Biomarker in Early Pregnancy. Elsevier.