APA (7e ed.) Bronvermelding

Não informado. (1969). Smithsonian contributions to botany. Smithsonian Institution.

Chicago (17e ed.) Bronvermelding

Não informado. Smithsonian Contributions to Botany. Washington: Smithsonian Institution, 1969.

MLA (8e ed.) Bronvermelding

Não informado. Smithsonian Contributions to Botany. Smithsonian Institution, 1969.

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