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 (8th ed.) Citation

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