Cita APA (7a ed.)
Foster, W. How to Draw Cats. Foster Art Service.
Cita estilo Chicago (17a ed.)
Foster, Walter. How to Draw Cats. Tustin, EUA: Foster Art Service.
Cita MLA (9a ed.)
Foster, Walter. How to Draw Cats. Foster Art Service.
Precaución: Estas citas no son 100% exactas.