Gaya APA

Karp, H. (2002). The Happiest Baby On The Block: The New Way to Calm Crying and Help Your Newborn Baby Sleep Longer . New York: A Bantam Book.

Gaya MLA

Karp, Harvey. "The Happiest Baby On The Block: The New Way to Calm Crying and Help Your Newborn Baby Sleep Longer". New York: A Bantam Book, 2002. Text Book.