APA (7th ed.) Citation

Speicher, R. (1997). On universal products. Free probability theory.

Chicago Style (17th ed.) Citation

Speicher, Roland. "On Universal Products." Free Probability Theory 1997.

MLA (9th ed.) Citation

Speicher, Roland. "On Universal Products." Free Probability Theory, 1997.

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