Tohutoro APA (7th ed.)
Karp, H. The Happiest Baby on The Block: The New Way to Calm Crying and Help Your Baby Sleep Longer. Bantam Books.
Tohutoru Kātū Chicago (17th ed.)
Karp, Harvey. The Happiest Baby on The Block: The New Way to Calm Crying and Help Your Baby Sleep Longer. Nueva York, EUA: Bantam Books.
Tohutoro MLA (9th ed.)
Karp, Harvey. The Happiest Baby on The Block: The New Way to Calm Crying and Help Your Baby Sleep Longer. Bantam Books.
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