APA (7th ed.) Zitazioa
Scott Publishing Co & Marzulla, E. E. Stamps and Stories: The exciting saga of U.S. history told in stamps (Primera edición.).
Chicago Style (17th ed.) Zitazioa
Scott Publishing Co eta Elena Editor Marzulla. Stamps and Stories: The Exciting Saga of U.S. History Told in Stamps. Primera edición.
MLA (9th ed.) Zitazioa
Scott Publishing Co eta Elena Editor Marzulla. Stamps and Stories: The Exciting Saga of U.S. History Told in Stamps. Primera edición.
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