John Clark. (2019). Mad About Science: Light and Sound (Mad About Science) (UK ed.). Southwood Books.
Chicago-referens (17:e uppl.)John Clark. Mad About Science: Light and Sound (Mad About Science). UK ed. Southwood Books, 2019.
MLA-referens (9:e uppl.)John Clark. Mad About Science: Light and Sound (Mad About Science). UK ed. Southwood Books, 2019.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.