APA ציטוט

Salpou, D., Kiserud, T., Rasmussen, S., & Johnsen, S. L. (2008). Fetal age assessment based on 2(nd )trimester ultrasound in Africa and the effect of ethnicity. BioMed Central.

Citação norma Chicago

Salpou, Daniel, Torvid Kiserud, Svein Rasmussen, and Synnøve Lian Johnsen. Fetal Age Assessment Based On 2(nd )trimester Ultrasound in Africa and the Effect of Ethnicity. BioMed Central, 2008.

ציטוט MLA

Salpou, Daniel, Torvid Kiserud, Svein Rasmussen, and Synnøve Lian Johnsen. Fetal Age Assessment Based On 2(nd )trimester Ultrasound in Africa and the Effect of Ethnicity. BioMed Central, 2008.