Gaya APA

Walton, H. (1968). Mechanical movements Exacly how mechine work: engines, turbines, transmissions, brakes, cluthes, rockets, atomic generators, gyroscopes, guidance system . USA: Popular science.

Gaya MLA

Walton, Harry. "Mechanical movements Exacly how mechine work: engines, turbines, transmissions, brakes, cluthes, rockets, atomic generators, gyroscopes, guidance system". USA: Popular science, 1968. Buku Text.