Scientific American. (1992). How leopard gets its spots: A collection of articles on how things happen. Scientific American.
Chicago-referens (17:e uppl.)Scientific American. How Leopard Gets Its Spots: A Collection of Articles on How Things Happen. [New York ]: Scientific American, 1992.
MLA-referens (9:e uppl.)Scientific American. How Leopard Gets Its Spots: A Collection of Articles on How Things Happen. Scientific American, 1992.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.