- 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 toddler on the block, by Harvey Karp with Paula Spencer
- The happiest baby on the block, the new way to calm crying and help your baby sleep longer, 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, by Harvey Karp ; director Nina Montée ; editor Val Thrasher, Vol. 1
- The happiest baby on the block, the new way to calm crying and help your baby sleep longer, written by Harvey Karp
- 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 on the block, super-soothing calming sounds, Happiest Baby, Inc. ; Harvey Karp
- 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 on the block, the new way to calm crying and help your baby sleep longer, Harvey Karp
- The happiest baby guide to great sleep, simple solutions for kids from birth to 5 years, Harvey Karp
- The happiest toddler on the block, the new way to stop the daily battle of wills and raise a secure and well-behaved one- to four-year-old, Harvey Karp with Paula Spencer
- The happiest baby on the block, the new way to calm crying and help your baby sleep longer, Harvey Karp