APA ציטוט

Petrén, K. (1920). Studies on Influenzal Pneumonia and Its Treatment. Edinb Med J.

Citação norma Chicago

Petrén, Karl. "Studies On Influenzal Pneumonia and Its Treatment." Edinb Med J 1920.

ציטוט MLA

Petrén, Karl. "Studies On Influenzal Pneumonia and Its Treatment." Edinb Med J 1920.