APA (7th ed.) Citation

Blanken, P. d. (1983). Day-labourers harvesting sugar-beets.

Chicago Style (17th ed.) Citation

Blanken, Piet den. Day-labourers Harvesting Sugar-beets. 1983.

MLA (8th ed.) Citation

Blanken, Piet den. Day-labourers Harvesting Sugar-beets. 1983.

Warning: These citations may not always be 100% accurate.