Cita APA (7th ed.)

Beitman, M. N. Most often needed 1939 radio diagrams and servicing information.

Cita Chicago (17th ed.)

Beitman, M. N. Most Often Needed 1939 Radio Diagrams and Servicing Information.

Cita MLA (8th ed.)

Beitman, M. N. Most Often Needed 1939 Radio Diagrams and Servicing Information.