Prem, H. J. (1997). The ancient Americas: A brief history and guide to research. Salt Lake City: University of Utah Press.
Чикагска система за цитиранеPrem, Hanns J. The Ancient Americas: A Brief History and Guide to Research. Salt Lake City: University of Utah Press, 1997.
MLA формат за цитиранеPrem, Hanns J. The Ancient Americas: A Brief History and Guide to Research. Salt Lake City: University of Utah Press, 1997.
Внимание: Тези цитати може да не са 100% точни.