APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.