Cita APA (7th ed.)

OXLADE CHRIS. MAKING MACHINES WITH SPRINGS (2015.). RAINTREE BOOKS PUBLISHING HOUSE.

Cita Chicago (17th ed.)

OXLADE CHRIS. MAKING MACHINES WITH SPRINGS. 2015. CHICAGO: RAINTREE BOOKS PUBLISHING HOUSE.

Cita MLA (9th ed.)

OXLADE CHRIS. MAKING MACHINES WITH SPRINGS. 2015. RAINTREE BOOKS PUBLISHING HOUSE.

Atenció: Aquestes cites poden no estar 100% correctes.