APA
Beakley G. C., Leach H. j. a., . (1979). Careefs in engineering and technology. New York: Macmillan.
Chicago
Beakley George C, Leach How jt author, . 1979. Careefs in engineering and technology. New York: Macmillan.
Harvard
Beakley G. C., Leach H. j. a., . (1979). Careefs in engineering and technology. New York: Macmillan.
MLA
Beakley George C, Leach How jt author, . Careefs in engineering and technology. New York: Macmillan. 1979.