Nail-biting

The Berenstain Bears & the Bad Habit

Jan Berenstain, Stan Berenstain

The Berenstain bears and the bad habit

Stan & Jan Berenstain.

BRN BRS & BAD HABIT (First Time Books)

Stan Berenstain

Nail-biting: the beatable habit

Frederick H. Smith.

The Berenstain Bears and the Bad Habit

Jan Berenstain, Stan Berenstain

Twins T and C from infancy to adolescence: a biogenetic study of individual differences by the method of co-twin control

by Arnold Gesell and Helen Thompson. Finger nail-biting: its incipiency, incidence, and amelioration, by Albert LeRoy Billig. An experimental study of the factors of maturation and practice in the behavioral development of the embryo of the frog, Rana pipiens, by Allan Fromme.

Where There's Smoke

Janet Munsil

Habit control in a day: the breakthrough book that describes professionally tested new methods for eliminating stuttering, nail biting, hair pulling, muscular tics, and other nervous habits

by Nathan H. Azrin and R. Gregory Nunn.

Stop Your Nailbiting!: Permanently

Gilbreth Brown

Fingernail biting: theory, research, and treatment

Norman H. Hadley.