APA引文

AHLGREN,Gilbert H. (1956). FORAGE CROPS (2.). McGRAW-HILL BOOK COMPANY,INC.

Chicago Edition Citation

AHLGREN,Gilbert H. FORAGE CROPS. 2. NEW YORK: McGRAW-HILL BOOK COMPANY,INC, 1956.

MLA引文

AHLGREN,Gilbert H. FORAGE CROPS. 2. McGRAW-HILL BOOK COMPANY,INC, 1956.

警告：这些引文格式不一定是100％准确.