Παραπομπή APA

Hay, W. W. (1991). Current pediatric diagnosis & treatment (Ed.12.).

Παραπομπή Chicago Style

Hay, William W. Current Pediatric Diagnosis & Treatment. Ed.12. London, Prentice Hall, 1991.

Παραπομπή MLA

Hay, William W. Current Pediatric Diagnosis & Treatment. Ed.12. 1991.