APA Format
Leon-Cava, Natalia, (et al) . (). Quantifying the benefits of breastfeeding: a summary of the evidence. : Washington, D.C: PAHO, 2002
MLA Format
Leon-Cava, Natalia, (et al) . Quantifying the benefits of breastfeeding: a summary of the evidence. : Washington, D.C: PAHO, 2002,
Australian/Harvard Format
Leon-Cava, Natalia, (et al) . . Quantifying the benefits of breastfeeding: a summary of the evidence. Washington, D.C: PAHO, 2002, 
Warning: These citations may not always be 100% accurate.