Não informado. (2004). Heart bulletin. Medical Arts Publishing Foundation.
Chicago (17e ed.) BronvermeldingNão informado. Heart Bulletin. Houston, Tex: Medical Arts Publishing Foundation, 2004.
MLA (8e ed.) BronvermeldingNão informado. Heart Bulletin. Medical Arts Publishing Foundation, 2004.
Let op: Deze citaties zijn niet altijd 100% accuraat.