@Book{031839223, author="Sahag{\'u}n, Bernardino de", editor="Anderson, Arthur James Outram and Dibble, Charles Elliot", title="Book 4/5: The soothsayers and the omens", series="Florentine Codex. Pt. 5/6", year="1957", publisher="The School of American Research", address="Santa F{\'e}, NM", language="English" }