APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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