APA (7th ed.) Citation

(1988). Grand Canyon [: Amphitheater of the Gods. Reader's Digest.

Chicago Style (17th ed.) Citation

Grand Canyon [: Amphitheater of the Gods. London: Reader's Digest, 1988.

MLA (9th ed.) Citation

Grand Canyon [: Amphitheater of the Gods. Reader's Digest, 1988.

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