Não informado. (1957). Science world: The magazine for high-school science students. Scholastic Magazines.
Citação do estilo Chicago (17ª ed.)Não informado. Science World: The Magazine for High-school Science Students. New York: Scholastic Magazines, 1957.
Citação MLA (8ª ed.)Não informado. Science World: The Magazine for High-school Science Students. Scholastic Magazines, 1957.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.