சியன்னா நகர கத்ரீன்: திருத்தங்களுக்கு இடையிலான வேறுபாடு

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*{{cite book | last = Catherine of Siena| first = | title = The Letters of St. Catherine of Siena |editor=Suzanne Noffke | publisher = Center for Medieval and Early Renaissance Studies, State University of New York at Binghamton | location = Binghamton | year = 1988 | isbn = 0866980369 |volume= 4}}

*{{cite book | author=Catherine of Siena | first = |editor=Suzanne Noffke | title = The Dialogue | publisher = Paulist Press | location = New York | year = 1980| isbn = 0809122332 }}