A study of thumb- and finger-sucking in infants.

MLA

Kunst, Mary S. A study of thumb- and finger-sucking in infants. Washington : American Psychological Assn., 1948.

APA

Kunst, M. (1948). A study of thumb- and finger-sucking in infants. Washington : American Psychological Assn..

Chicago

Kunst, Mary S. A study of thumb- and finger-sucking in infants. Washington : American Psychological Assn., 1948.