@book{1234,
	author = {Géza Gárdonyi and Lê Xuân Giang},
	title = {Những Ngôi Sao Eger},
	address = {Hà Nội},
	url = {https://data.thuviencodoc.org/books/1237/1237/nhung-ngoi-sao-eger.jpg}
}