Παραπομπή APA

C David Edgar & Stephen Williams. (1966). Planned beef production. Crosby lock wood and sons.

Παραπομπή Chicago Style

C David Edgar και Stephen Williams. Planned Beef Production. Crosby lock wood and sons, 1966.

Παραπομπή MLA

C David Edgar και Stephen Williams. Planned Beef Production. Crosby lock wood and sons, 1966.