APA-referens

(1993). Improvement of soil fertility. China: International Foundation for Science (IFS).

Chicago-stil citat

Improvement of Soil Fertility. China: International Foundation for Science (IFS), 1993.

MLA-referens

Improvement of Soil Fertility. China: International Foundation for Science (IFS), 1993.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.