WEILL ANN. (2019). THE WORLD'S MOST AMAZING NATIONAL PARKS (2018 Ed.). RAINTREE PUBLISHERS.
Chicago-čujuhus (17. p.)WEILL ANN. THE WORLD'S MOST AMAZING NATIONAL PARKS. 2018 Ed. CHICAGO: RAINTREE PUBLISHERS, 2019.
MLA-čujuhus (9. p.)WEILL ANN. THE WORLD'S MOST AMAZING NATIONAL PARKS. 2018 Ed. RAINTREE PUBLISHERS, 2019.
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