Cita APA (7th ed.)

Beakley, G. C. (1979). Careers in engineering and technology (2ª ed.). Macmillan.

Cita Chicago (17th ed.)

Beakley, George C. Careers in Engineering and Technology. 2ª ed. Macmillan, 1979.

Cita MLA (9th ed.)

Beakley, George C. Careers in Engineering and Technology. 2ª ed. Macmillan, 1979.