APA (7th ed.) Zitazioa
Harrison, D. L. (1978). The circus is in town: A counting book. Western publishing.
Chicago Style (17th ed.) Zitazioa
Harrison, David L. The Circus Is in Town: A Counting Book. New York: Western publishing, 1978.
MLA (9th ed.) Zitazioa
Harrison, David L. The Circus Is in Town: A Counting Book. Western publishing, 1978.
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