Hoban, T. (1978). Is it red? Is it yellow? Is it blue?: An adventure in color. Greenwillow Books.
Citace podle Chicago (17th ed.)Hoban, Tana. Is It Red? Is It Yellow? Is It Blue?: An Adventure in Color. New York: Greenwillow Books, 1978.
Citace podle MLA (8th ed.)Hoban, Tana. Is It Red? Is It Yellow? Is It Blue?: An Adventure in Color. Greenwillow Books, 1978.
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