Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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