APA

Robertson D. H., . (1961). Lectures on economic principles, Vol.01&2&3. : Asia Publishing Co., Madras.

Chicago

Robertson Dennis H, . 1961. Lectures on economic principles, Vol.01&2&3. : Asia Publishing Co., Madras.

Harvard

Robertson D. H., . (1961). Lectures on economic principles, Vol.01&2&3. : Asia Publishing Co., Madras.

MLA

Robertson Dennis H, . Lectures on economic principles, Vol.01&2&3. : Asia Publishing Co., Madras. 1961.