APA (7th ed.) Citation

Roman, S. (2005). The umbral calculus. Dover Publications, Inc.

Chicago Style (17th ed.) Citation

Roman, Steven. The Umbral Calculus. Mineola, N.Y: Dover Publications, Inc, 2005.

MLA (8th ed.) Citation

Roman, Steven. The Umbral Calculus. Dover Publications, Inc, 2005.

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