Cita APA (7th ed.)

BLANC, A. (1996). Stairs, steps and ramps. Butterworth Architecture.

Cita Chicago (17th ed.)

BLANC, Alan. Stairs, Steps and Ramps. Oxford: Butterworth Architecture, 1996.

Cita MLA (9th ed.)

BLANC, Alan. Stairs, Steps and Ramps. Butterworth Architecture, 1996.