APA (7. basım) Alıntı

Coxhead, I. A. (1991). Environmental specific rates and biases of technical change in agriculture. s.n.

Chicago Style (17. basım) Atıf

Coxhead, Ian A. Environmental Specific Rates and Biases of Technical Change in Agriculture. [S.l: s.n, 1991.

MLA (9th ed.) Atıf

Coxhead, Ian A. Environmental Specific Rates and Biases of Technical Change in Agriculture. s.n, 1991.