APA-viite (7. p.)
Duffy, J. (1972). Patrick in his own words. Veritas Publications.
Chicago-viite (17. p.)
Duffy, Joseph. Patrick in His Own Words. Dublin: Veritas Publications, 1972.
MLA-viite (9. p.)
Duffy, Joseph. Patrick in His Own Words. Veritas Publications, 1972.
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