APA引文

Lincoln David Kelsey. (1955). Cooperative extension work (2nd.). Comstock publishing associates.

Chicago Edition Citation

Lincoln David Kelsey. Cooperative Extension Work. 2nd. Comstock publishing associates, 1955.

MLA引文

Lincoln David Kelsey. Cooperative Extension Work. 2nd. Comstock publishing associates, 1955.

警告：這些引文格式不一定是100％准確.