APA

Pearson C., Norman D. & Dixon J. (1995). Sustainable dryland cropping in relation to soil productivity. : .

Chicago

Pearson C.J, Norman D.W and Dixon John. 1995. Sustainable dryland cropping in relation to soil productivity. : .

Harvard

Pearson C., Norman D. and Dixon J. (1995). Sustainable dryland cropping in relation to soil productivity. : .

MLA

Pearson C.J, Norman D.W and Dixon John. Sustainable dryland cropping in relation to soil productivity. : . 1995.