APA-viite

Boatfield, G. (1971). Cassel book of farm study. Casesll.

Chicago-tyylinen lähdeviittaus

Boatfield, G. Cassel Book of Farm Study. London: Casesll, 1971.

MLA-viite

Boatfield, G. Cassel Book of Farm Study. Casesll, 1971.