Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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