APA

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

Chicago

Keller George E, . 1987. Separations: new directions for an old field. New York: American Inst. of Chemial Engineers.

Harvard

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

MLA

Keller George E, . Separations: new directions for an old field. New York: American Inst. of Chemial Engineers. 1987.