APA استشهاد

Onyemelukwe, C. C. (2009). Science of economic development and growth: The theory of factor proportions. Reference press.

استشهاد بنمط شيكاغو

Onyemelukwe, Clement C. Science of Economic Development and Growth: The Theory of Factor Proportions. New Delhi: Reference press, 2009.

MLA استشهاد

Onyemelukwe, Clement C. Science of Economic Development and Growth: The Theory of Factor Proportions. Reference press, 2009.