Cita APA (7th ed.)

GIFFFORD CLIVE. (2019). HOW THE WORLD WORKS (2013 Ed.). KINGFISHER BOOKS LTD.

Cita Chicago (17th ed.)

GIFFFORD CLIVE. HOW THE WORLD WORKS. 2013 Ed. LONDON: KINGFISHER BOOKS LTD, 2019.

Cita MLA (9th ed.)

GIFFFORD CLIVE. HOW THE WORLD WORKS. 2013 Ed. KINGFISHER BOOKS LTD, 2019.