APA (7th ed.) Citation

Keller, G. E. (1987). Separations: New directions for an old field. American Inst. of Chem. Engineers.

Chicago Style (17th ed.) Citation

Keller, George E. Separations: New Directions for an Old Field. New York, NY: American Inst. of Chem. Engineers, 1987.

MLA (9th ed.) Citation

Keller, George E. Separations: New Directions for an Old Field. American Inst. of Chem. Engineers, 1987.