Cita APA (7th ed.)

Churchill, R. V. (1972). Operational mathematics. McGraw-Hill.

Cita Chicago (17th ed.)

Churchill, Ruel Vance. Operational Mathematics. Nueva York: McGraw-Hill, 1972.

Cita MLA (9th ed.)

Churchill, Ruel Vance. Operational Mathematics. McGraw-Hill, 1972.