Jones, J. W. (1917). The greatest problem of the race - its own conservation. Printed at the Ohio State Reformatory.
Citace podle Chicago (17th ed.)Jones, John Williams. The Greatest Problem of the Race - Its Own Conservation. [Mansfield: Printed at the Ohio State Reformatory, 1917.
Citace podle MLA (8th ed.)Jones, John Williams. The Greatest Problem of the Race - Its Own Conservation. Printed at the Ohio State Reformatory, 1917.
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