Lua APA (7ú heag.)

OXLADE CHRIS. (2019). MAKING MACHINES WITH WHEELS AND AXLES (2014 Ed.). RAINTREE PUBLISHERS.

Lua i Stíl Chicago (17ú heag.)

OXLADE CHRIS. MAKING MACHINES WITH WHEELS AND AXLES. 2014 Ed. CHICAGO: RAINTREE PUBLISHERS, 2019.

Lua MLA (9ú heag.)

OXLADE CHRIS. MAKING MACHINES WITH WHEELS AND AXLES. 2014 Ed. RAINTREE PUBLISHERS, 2019.

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