Cita APA (7a ed.)
Paddock, J. Tula and the collapse of the central Mexican classic.
Cita Chicago Style (17a ed.)
Paddock, John. Tula and the Collapse of the Central Mexican Classic.
Cita MLA (9a ed.)
Paddock, John. Tula and the Collapse of the Central Mexican Classic.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.