Roberts, F. P. (1968). Breast feeding. J. Wright.
Lua i Stíl Chicago (17ú heag.)Roberts, Francis Paul. Breast Feeding. Bristol: J. Wright, 1968.
Lua MLA (8ú heag.)Roberts, Francis Paul. Breast Feeding. J. Wright, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.