APA (7th ed.) Citation

Clements, G. R. (1916). Problems in the mathematical theory of investment. Ginn and company.

Chicago Style (17th ed.) Citation

Clements, Guy Roger. Problems in the Mathematical Theory of Investment. Boston, New York [etc.]: Ginn and company, 1916.

MLA (9th ed.) Citation

Clements, Guy Roger. Problems in the Mathematical Theory of Investment. Ginn and company, 1916.