Mayer, F., & Spencer, H. Chakkar: Polo around the world. Herbert Spencer.
Chicago-čujuhus (17. p.)Mayer, Fred, juo Herbert Spencer. Chakkar: Polo Around the World. : Herbert Spencer.
MLA-čujuhus (9. p.)Mayer, Fred, juo Herbert Spencer. Chakkar: Polo Around the World. Herbert Spencer.
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