Cita APA (7th ed.)

Churchill, R. V. (1972). Operational mathematics (3d ed.). McGraw-Hill Book Co., Inc.

Cita Chicago (17th ed.)

Churchill, Ruel Vance. Operational Mathematics. 3d ed. New York: McGraw-Hill Book Co., Inc, 1972.

Cita MLA (9th ed.)

Churchill, Ruel Vance. Operational Mathematics. 3d ed. McGraw-Hill Book Co., Inc, 1972.