California Farm Bureau Federation & Contra Costa County Farm Bureau (Calif.). (1924). Contra Costa County farm bureau monthly. Contra Costa County Farm Bureau.
Chicagoスタイル(17版)引用形式California Farm Bureau Federation , Contra Costa County Farm Bureau (Calif.). Contra Costa County Farm Bureau Monthly. Hayward, Calif.: Contra Costa County Farm Bureau, 1924.
MLA(8版)引用形式California Farm Bureau Federation , Contra Costa County Farm Bureau (Calif.). Contra Costa County Farm Bureau Monthly. Contra Costa County Farm Bureau, 1924.
警告: この引用は必ずしも正確ではありません.