JACKSON , G. E. (2002). THE LOST BALL: READ & GRAW SERIES A.4.
Lua i Stíl Chicago (17ú heag.)JACKSON , GRETA ED. THE LOST BALL: READ & GRAW SERIES A.4. 2002.
Lua MLA (9ú heag.)JACKSON , GRETA ED. THE LOST BALL: READ & GRAW SERIES A.4. 2002.
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