APA引文

Oluf Chr. Bockman. (1990). Agriculture and fertilizers: Fertilizers in perspective. Norway: Norsk Hydro a.s.

Trích dẫn kiểu Chicago

Oluf Chr. Bockman. Agriculture and Fertilizers: Fertilizers in Perspective. Norway: Norsk Hydro a.s, 1990.

MLA引文

Oluf Chr. Bockman. Agriculture and Fertilizers: Fertilizers in Perspective. Norway: Norsk Hydro a.s, 1990.

警告：这些引文格式不一定是100％准确.