APA (7th ed.) Citation

Keirstead, B. S. (1948). The theory of economic change. Macmillan Co. of Canada.

Chicago Style (17th ed.) Citation

Keirstead, B. S. The Theory of Economic Change. Toronto: Macmillan Co. of Canada, 1948.

MLA (9th ed.) Citation

Keirstead, B. S. The Theory of Economic Change. Macmillan Co. of Canada, 1948.