APA (7th ed.) Citation

Siegel, D. R., & Siegel, D. F. (1990). Futures markets. The Dryden Press.

Chicago Style (17th ed.) Citation

Siegel, Daniel Richard, and Diane F. Siegel. Futures Markets. Chicago: The Dryden Press, 1990.

MLA (9th ed.) Citation

Siegel, Daniel Richard, and Diane F. Siegel. Futures Markets. The Dryden Press, 1990.