APA引文

Iowa State College. Extension Service. (1934). Extension circular. Iowa State College of Agriculture and Mechanic Arts.

Chicago Style (17th ed.) Citation

Iowa State College. Extension Service. Extension Circular. Ames, Iowa: Iowa State College of Agriculture and Mechanic Arts, 1934.

MLA引文

Iowa State College. Extension Service. Extension Circular. Iowa State College of Agriculture and Mechanic Arts, 1934.

警告：这些引文格式不一定是100％准确.