APA (7th ed.) Citation

Wright, D. M. (1955). A key to modern economics. The Macmillan Co.

Chicago Style (17th ed.) Citation

Wright, David McCord. A Key to Modern Economics. The Macmillan Co, 1955.

MLA (8th ed.) Citation

Wright, David McCord. A Key to Modern Economics. The Macmillan Co, 1955.

Warning: These citations may not always be 100% accurate.