Mayer, F., & Spencer, H. Chakkar: Polo around the world. Herbert Spencer.
Cita Chicago (17th ed.)Mayer, Fred, i Herbert Spencer. Chakkar: Polo Around the World. : Herbert Spencer.
Cita MLA (9th ed.)Mayer, Fred, i Herbert Spencer. Chakkar: Polo Around the World. Herbert Spencer.
Atenció: Aquestes cites poden no estar 100% correctes.