APA citiranje

Fill Malfertheiner, S., Malfertheiner, M. V., Kropf, S., Costa, S., & Malfertheiner, P. (2012). A prospective longitudinal cohort study: Evolution of GERD symptoms during the course of pregnancy. BioMed Central.

Citação norma Chicago

Fill Malfertheiner, Sara, Maximilian V. Malfertheiner, Siegfried Kropf, Serban-Dan Costa, and Peter Malfertheiner. A Prospective Longitudinal Cohort Study: Evolution of GERD Symptoms During the Course of Pregnancy. BioMed Central, 2012.

MLA citiranje

Fill Malfertheiner, Sara, et al. A Prospective Longitudinal Cohort Study: Evolution of GERD Symptoms During the Course of Pregnancy. BioMed Central, 2012.