Citação norma APA

Gudnadóttir, A. Ý., Ólafsdóttir, I. S., Middelveld, R., Ekerljung, L., Forsberg, B., Franklin, K., . . . Janson, C. (2017). An investigation on the use of snus and its association with respiratory and sleep-related symptoms: A cross-sectional population study. BMJ Open.

Citação norma Chicago

Gudnadóttir, Arna Ýr, Inga Sif Ólafsdóttir, Roelinde Middelveld, Linda Ekerljung, Bertil Forsberg, Karl Franklin, Eva Lindberg, and Christer Janson. "An Investigation On the Use of Snus and Its Association With Respiratory and Sleep-related Symptoms: A Cross-sectional Population Study." BMJ Open 2017.

Citação norma MLA

Gudnadóttir, Arna Ýr, et al. "An Investigation On the Use of Snus and Its Association With Respiratory and Sleep-related Symptoms: A Cross-sectional Population Study." BMJ Open 2017.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.