APA (7th ed.) Citation

Helfer, R. E. (1974). The battered child (2. ed.). Univ. of Chicago Pr.

Chicago Style (17th ed.) Citation

Helfer, Ray E. The Battered Child. 2. ed. Chicago [u.a.]: Univ. of Chicago Pr, 1974.

MLA (9th ed.) Citation

Helfer, Ray E. The Battered Child. 2. ed. Univ. of Chicago Pr, 1974.