Cita APA (7a ed.)
Tyler, V. E. Focus on Forgeries: A Guide to Forgeries of Common Stamps.
Cita Chicago Style (17a ed.)
Tyler, Varro E. Focus on Forgeries: A Guide to Forgeries of Common Stamps.
Cita MLA (9a ed.)
Tyler, Varro E. Focus on Forgeries: A Guide to Forgeries of Common Stamps.
Precaución: Estas citas no son 100% exactas.