Cita APA

O'Halloran, S. M., & Heaf, D. P. (1989). Accident and emergency department attendance by asthmatic children.

Citación estilo Chicago

O'Halloran, S M., y D P. Heaf. Accident and Emergency Department Attendance By Asthmatic Children. 1989.

Cita MLA

O'Halloran, S M., y D P. Heaf. Accident and Emergency Department Attendance By Asthmatic Children. 1989.