Tài liệu tham khảo WikiPedia: Trận_Çatalca_lần_thứ_nhất http://books.google.com/books?id=3fYuy5iUi_sC http://books.google.com/books?id=ZSllgZ-1D4YC http://books.google.com/books?id=vwoXAQAAIAAJ&q=va...