* {{cite book | last=Samuel | first=G. John | title=On Tamil Poems and Poets | publisher=Institute of Asian Studies | publication-place=Chennai | date=2006 | isbn=978-81-87892-37-3}}
<ref name="t523">{{cite book | last=Samuel | first=G. John | title=On Tamil Poems and Poets | publisher=Institute of Asian Studies | publication-place=Chennai | date=2006 | isbn=978-81-87892-37-3 | page=}}</ref>