APA (7e ed.) Bronvermelding

Não informado. University of Pennsylvania medical bulletin. University of Pennsylvania, School of Medicine.

Chicago (17e ed.) Bronvermelding

Não informado. University of Pennsylvania Medical Bulletin. Philadelphia, Pa: University of Pennsylvania, School of Medicine.

MLA (8e ed.) Bronvermelding

Não informado. University of Pennsylvania Medical Bulletin. University of Pennsylvania, School of Medicine.

Let op: Deze citaties zijn niet altijd 100% accuraat.