Popova, I. (2006). Enea Silvio Pikolomini (Papa Pij II) i Balkanite prez XV v: (istoričeski etjudi) = Aeneas Sylvius Piccolomini (Pope Pius II) and the Balkans in the 15th century. Faber.
Chicago Style (17th ed.) CitationPopova, Ivajla. Enea Silvio Pikolomini (Papa Pij II) I Balkanite Prez XV V: (istoričeski Etjudi) = Aeneas Sylvius Piccolomini (Pope Pius II) and the Balkans in the 15th Century. Veliko Tărnovo: Faber, 2006.
MLA (8th ed.) CitationPopova, Ivajla. Enea Silvio Pikolomini (Papa Pij II) I Balkanite Prez XV V: (istoričeski Etjudi) = Aeneas Sylvius Piccolomini (Pope Pius II) and the Balkans in the 15th Century. Faber, 2006.
Warning: These citations may not always be 100% accurate.