Cita APA (7a ed.)
Orbis Books & Tosco, U. Postage Stamps: Modern History in the Mail.
Cita Chicago Style (17a ed.)
Orbis Books y Uberto Tosco. Postage Stamps: Modern History in the Mail.
Cita MLA (9a ed.)
Orbis Books y Uberto Tosco. Postage Stamps: Modern History in the Mail.
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