APA (7th ed.) Citation

Peterson, D. E. Spiro Mounds: Prehistoric Gateway ... Present-Day Enigma.

Chicago Style (17th ed.) Citation

Peterson, D. E. Spiro Mounds: Prehistoric Gateway ... Present-Day Enigma.

MLA (9th ed.) Citation

Peterson, D. E. Spiro Mounds: Prehistoric Gateway ... Present-Day Enigma.

Warning: These citations may not always be 100% accurate.