Perkins,Dwight H. (1969). Agriculture development in China 1368-1968. University Press.
Lua i Stíl Chicago (17ú heag.)Perkins,Dwight H. Agriculture Development in China 1368-1968. Edinburg: University Press, 1969.
Lua MLA (8ú heag.)Perkins,Dwight H. Agriculture Development in China 1368-1968. University Press, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.