Gaya APA

Genna, C, W. (2013). Supporting Sucking Skills : in Breastfeeding Infants, Second Edition (Ed. 2). United State: Jones and Bartlett Learning.

Gaya MLA

Genna, Catherine, Watson. "Supporting Sucking Skills : in Breastfeeding Infants, Second Edition". Ed. 2 United State: Jones and Bartlett Learning, 2013. Text.