Laemmel, R. (1957). Isaac Newton. Büchergilde Gutenberg.
Chicago Style (17th ed.) CitationLaemmel, Rudolf. Isaac Newton. Zürich: Büchergilde Gutenberg, 1957.
MLA (8th ed.) CitationLaemmel, Rudolf. Isaac Newton. Büchergilde Gutenberg, 1957.
Warning: These citations may not always be 100% accurate.