APA引文

DOUGLAS, M., & NORMAN, D. (2007). FARMING SYSTEMS DEVELOPMENT AND SOIL CONSERVATION.

Chicago Edition Citation

DOUGLAS, MALCOLM, and DAVID NORMAN. FARMING SYSTEMS DEVELOPMENT AND SOIL CONSERVATION. DELHI, DAYA PUBLISHING HOUSE, 2007.

MLA引文

DOUGLAS, MALCOLM, and DAVID NORMAN. FARMING SYSTEMS DEVELOPMENT AND SOIL CONSERVATION. 2007.