- The happiest baby on the block, the new way to calm crying and help your newborn baby sleep longer, Harvey Karp, M.D
- The happiest baby guide to great sleep, simple solutions for kids from birth to 5 years, Harvey Karp
- The happiest baby on the block, the new way to calm crying and help your newborn baby sleep longer, Harvey Karp, M.D
- The happiest toddler on the block, how to eliminate tantrums and raise a patient, respectful and cooperative one- to four-year-old, Harvey Karp ; with Paula Spencer
- The happiest toddler on the block, how to eliminate tantrums and raise a patient, respectful and cooperative one- to four-year-old, Harvey Karp ; with Paula Spencer
- The happiest baby guide to great sleep, simple solutions for kids from birth to 5 years, Harvey Karp