Chapman, S. (1912). The Eagle and Maximilian Stamps of Mexico (1a. ed.). Stanley Gibbons.
Cita Chicago (17th ed.)Chapman, S. The Eagle and Maximilian Stamps of Mexico. 1a. ed. Londres: Stanley Gibbons, 1912.
Cita MLA (9th ed.)Chapman, S. The Eagle and Maximilian Stamps of Mexico. 1a. ed. Stanley Gibbons, 1912.
Atenció: Aquestes cites poden no estar 100% correctes.