APA (7e ed.) Bronvermelding

Não informado. (1942). Plant science literature. U.S. Department of Agriculture, Bureau of Plant Industry.

Chicago (17e ed.) Bronvermelding

Não informado. Plant Science Literature. Washington: U.S. Department of Agriculture, Bureau of Plant Industry, 1942.

MLA (8e ed.) Bronvermelding

Não informado. Plant Science Literature. U.S. Department of Agriculture, Bureau of Plant Industry, 1942.

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