Cita APA (7a ed.)
Paddock, J. Early steps in the evolution of maya writing.
Cita Chicago Style (17a ed.)
Paddock, John. Early Steps in the Evolution of Maya Writing.
Cita MLA (9a ed.)
Paddock, John. Early Steps in the Evolution of Maya Writing.
警告：這些引文格式不一定是100％准確.