Duffy, P. J. O. (1927). The shepherd boy: A poem beginning "Pondering, alone upon the hills he stood".
Lua i Stíl Chicago (17ú heag.)Duffy, P. J. O'Connor. The Shepherd Boy: A Poem Beginning "Pondering, Alone upon the Hills He Stood". 1927.
Lua MLA (9ú heag.)Duffy, P. J. O'Connor. The Shepherd Boy: A Poem Beginning "Pondering, Alone upon the Hills He Stood". 1927.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
