Cita APA (7th ed.)
SCRUTTON, D. (1987). RECIPROCAL WALKING SYSTEMS: A LOOK AT SOME OF THE EARLY STEPS.
Cita Chicago (17th ed.)
SCRUTTON, D. RECIPROCAL WALKING SYSTEMS: A LOOK AT SOME OF THE EARLY STEPS. 1987.
Cita MLA (9th ed.)
SCRUTTON, D. RECIPROCAL WALKING SYSTEMS: A LOOK AT SOME OF THE EARLY STEPS. 1987.
Atenció: Aquestes cites poden no estar 100% correctes.