@book{Lourenco:LatinZero, title = "Latin do Zero", author = "Frederico Lourenço", address = "Lisboa", edition = "1", isbn = "978-1-4767-6668-3", publisher = "Quetzal", year = "2020", } @book{Lourenco:NGL, title = "Nova Gramática de Latim", author = "Frederico Lourenço", address = "Lisboa", edition = "1", isbn = "978-989-722-566-6", publisher = "Quetzal", year = "2019", }