SALES, R. [. (1978). Children's britannica 4: Bulbs - chub. Encyclopaedia Britannica International.
Chicago-čujuhus (17. p.)SALES, Robin [Ed.]. Children's Britannica 4: Bulbs - Chub. London: Encyclopaedia Britannica International, 1978.
MLA-čujuhus (9. p.)SALES, Robin [Ed.]. Children's Britannica 4: Bulbs - Chub. Encyclopaedia Britannica International, 1978.
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