APA (7e ed.) Bronvermelding

Não informado. (1988). Plant Varieties & Seeds. National Institute of Agriculture.

Chicago (17e ed.) Bronvermelding

Não informado. Plant Varieties & Seeds. Cambridge, Inglaterra: National Institute of Agriculture, 1988.

MLA (8e ed.) Bronvermelding

Não informado. Plant Varieties & Seeds. National Institute of Agriculture, 1988.

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