Cita APA (7th ed.)
ELFER, P., & GATISS, S. (1990). CHARTING CHILD HEALTH SERVICES. NATIONAL CHILDREN'S BUREAU.
Cita Chicago (17th ed.)
ELFER, P., i S. GATISS. CHARTING CHILD HEALTH SERVICES. Londres: NATIONAL CHILDREN'S BUREAU, 1990.
Cita MLA (9th ed.)
ELFER, P., i S. GATISS. CHARTING CHILD HEALTH SERVICES. NATIONAL CHILDREN'S BUREAU, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.