APA (7th ed.) Citation

(2000). Sacred Valley, Modern Times: Along the Inca Trail. National Geographic Digital Media.

Chicago Style (17th ed.) Citation

Sacred Valley, Modern Times: Along the Inca Trail. National Geographic Digital Media, 2000.

MLA (9th ed.) Citation

Sacred Valley, Modern Times: Along the Inca Trail. National Geographic Digital Media, 2000.

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