Southwest Parks and Monuments Association. Nalakihu-Citadel Trail, Wupatki National Monument, Arizona.
Chicagoスタイル(17版)引用形式Southwest Parks and Monuments Association. Nalakihu-Citadel Trail, Wupatki National Monument, Arizona.
MLA(9版)引用形式Southwest Parks and Monuments Association. Nalakihu-Citadel Trail, Wupatki National Monument, Arizona.
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