APA Format

49163. (1991). Babies: Understanding conception,birth dan the pirs years. London : Univ Collegen hospital

MLA Format

49163. Babies: Understanding conception,birth dan the pirs years. London : Univ Collegen hospital, 1991

Chicago Format

49163. Babies: Understanding conception,birth dan the pirs years. London : Univ Collegen hospital, 1991

Australian/Harvard Format

49163. 1991. Babies: Understanding conception,birth dan the pirs years. Univ Collegen hospital London