Cita APA (7a ed.)
Hess, F. C. Chemistry made simple. Made Simple Books.
Cita estilo Chicago (17a ed.)
Hess, Fred C. Chemistry Made Simple. Nueva York, EUA: Made Simple Books.
Cita MLA (9a ed.)
Hess, Fred C. Chemistry Made Simple. Made Simple Books.
Precaución: Estas citas no son 100% exactas.