Alexander F Skutch. (1979). The imperative call: A naturalist's quest in temperate and tropical America. Gainesville, Florida: Univ. Press of Florida.
シカゴスタイル引用形Alexander F Skutch. The Imperative Call: A Naturalist's Quest in Temperate and Tropical America. Gainesville, Florida: Univ. Press of Florida, 1979.
MLA引用形式Alexander F Skutch. The Imperative Call: A Naturalist's Quest in Temperate and Tropical America. Gainesville, Florida: Univ. Press of Florida, 1979.
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