APA (7e ed.) Bronvermelding

Advance Directives (2015). National Cancer Institute Member Services.

Chicago (17e ed.) Bronvermelding

Advance Directives (2015). National Cancer Institute Member Services.

MLA (9e ed.) Bronvermelding

Advance Directives (2015). National Cancer Institute Member Services.

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