APA Citatie

Lindam, A., Jansson, C., Nordenstedt, H., Pedersen, N. L., & Lagergren, J. (2012). A Population-Based Study of Gastroesophageal Reflux Disease and Sleep Problems in Elderly Twins. Public Library of Science.

Chicago Style citaat

Lindam, Anna, Catarina Jansson, Helena Nordenstedt, Nancy L. Pedersen, en Jesper Lagergren. A Population-Based Study of Gastroesophageal Reflux Disease and Sleep Problems in Elderly Twins. Public Library of Science, 2012.

MLA citatie

Lindam, Anna, et al. A Population-Based Study of Gastroesophageal Reflux Disease and Sleep Problems in Elderly Twins. Public Library of Science, 2012.