APA

Stephens F. D., Smith E. D., . (1971). Ano- rectal malformations in children. Chicago: Year Book Medical Publishers.

Chicago

Stephens F Douglas, Smith E Durham, . 1971. Ano- rectal malformations in children. Chicago: Year Book Medical Publishers.

Harvard

Stephens F. D., Smith E. D., . (1971). Ano- rectal malformations in children. Chicago: Year Book Medical Publishers.

MLA

Stephens F Douglas, Smith E Durham, . Ano- rectal malformations in children. Chicago: Year Book Medical Publishers. 1971.