Cita APA (7th ed.)
Tylor, P. W. Postmarks of Mexico 1821 to 1883.
Cita Chicago (17th ed.)
Tylor, Peter W. Postmarks of Mexico 1821 to 1883.
Cita MLA (9th ed.)
Tylor, Peter W. Postmarks of Mexico 1821 to 1883.
Atenció: Aquestes cites poden no estar 100% correctes.