APA (7e ed.) Bronvermelding
Heffron, R. (1939). Pneumonia: With special reference to pneumococcus lobar pneumonia. The Commonwealth Fund.
Chicago (17e ed.) Bronvermelding
Heffron, Roderick. Pneumonia: With Special Reference to Pneumococcus Lobar Pneumonia. New York: The Commonwealth Fund, 1939.
MLA (9e ed.) Bronvermelding
Heffron, Roderick. Pneumonia: With Special Reference to Pneumococcus Lobar Pneumonia. The Commonwealth Fund, 1939.
Let op: Deze citaties zijn niet altijd 100% accuraat.