Citazione Stile APA (7a Edizione)

Tough, J. M., & O'Flaherty, C. A. (1971). Passenger conveyors: An innovatory form of communal transport. Ian Allan.

Citazione stile Chigago Style (17a edizione)

Tough, John M., e Coleman A. O'Flaherty. Passenger Conveyors: An Innovatory Form of Communal Transport. Londres: Ian Allan, 1971.

Citatione MLA (9a ed.)

Tough, John M., e Coleman A. O'Flaherty. Passenger Conveyors: An Innovatory Form of Communal Transport. Ian Allan, 1971.