Discovery Channel (Firm). (2003). Arizona and the Grand Canyon. Apa Publications.
芝加哥风格引文Discovery Channel (Firm). Arizona and the Grand Canyon. Singapore: Apa Publications, 2003.
MLA引文Discovery Channel (Firm). Arizona and the Grand Canyon. Apa Publications, 2003.
警告：这些引文格式不一定是100％准确.