APA (7e ed.) Bronvermelding

Não informado. Plant Immigrants. U.S. Department of Agriculture, Bureau of Plant Industry.

Chicago (17e ed.) Bronvermelding

Não informado. Plant Immigrants. Washington: U.S. Department of Agriculture, Bureau of Plant Industry.

MLA (8e ed.) Bronvermelding

Não informado. Plant Immigrants. U.S. Department of Agriculture, Bureau of Plant Industry.

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