Analysis of information sources in references of the Wikipedia article "Ioan al IX-lea al Constantinopolului" in Romanian language version.
|deadlink= ignorat (posibil, |dead-url=?) (ajutor)|deadlink= ignorat (posibil, |dead-url=?) (ajutor)|deadlink= ignorat (posibil, |dead-url=?) (ajutor)|deadlink= ignorat (posibil, |dead-url=?) (ajutor)