Cita APA (7a ed.)
Orbis Books & Tosco, U. Postage Stamps: Modern History in the Mail.
Cita Chicago Style (17a ed.)
Orbis Books 与 Uberto Tosco. Postage Stamps: Modern History in the Mail.
Cita MLA (9a ed.)
Orbis Books 与 Uberto Tosco. Postage Stamps: Modern History in the Mail.
警告：这些引文格式不一定是100％准确.