Citazione APA

Houghton, P. S. (1970). Gears: Spno, belical, bevel internal, epicyclic and worm (2nd ed.). Technical press.

Stile di citazione Chicago

Houghton, P S. Gears: Spno, Belical, Bevel Internal, Epicyclic and Worm. 2nd ed. London: Technical press, 1970.

Citazione MLA

Houghton, P S. Gears: Spno, Belical, Bevel Internal, Epicyclic and Worm. 2nd ed. Technical press, 1970.