Heatley, M., & Salter, C. (2012). Everything you need to know about everything you need to know about inventions. Portico Books.
Citazione stile Chigago Style (17a edizione)Heatley, MIchael, e Colin Salter. Everything You Need to Know About Everything You Need to Know About Inventions. United Kingdom: Portico Books, 2012.
Citatione MLA (9a ed.)Heatley, MIchael, e Colin Salter. Everything You Need to Know About Everything You Need to Know About Inventions. Portico Books, 2012.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.