Cita APA (7th ed.)
PULLAN, C., & HULL, D. (1990). ROUTINE IMMUNISATION OF PRETERM INFANTS.
Cita Chicago (17th ed.)
PULLAN, C.R, i D. HULL. ROUTINE IMMUNISATION OF PRETERM INFANTS. 1990.
Cita MLA (9th ed.)
PULLAN, C.R, i D. HULL. ROUTINE IMMUNISATION OF PRETERM INFANTS. 1990.
Atenció: Aquestes cites poden no estar 100% correctes.