Cita APA (7th ed.)

Kratfel, E. R. (1976). Introduction to modern sheet metal. Reston Pub. Co..

Cita Chicago (17th ed.)

Kratfel, Edward R. Introduction to Modern Sheet Metal. Reston, Va.: Reston Pub. Co., 1976.

Cita MLA (8th ed.)

Kratfel, Edward R. Introduction to Modern Sheet Metal. Reston Pub. Co., 1976.