Tacio, H. D. (2017). Hard times for Philippine birds. Philippine Graphic.
Chicagoスタイル(17版)引用形式Tacio, Henrylito D. "Hard Times for Philippine Birds." Philippine Graphic 2017.
MLA(8版)引用形式Tacio, Henrylito D. "Hard Times for Philippine Birds." Philippine Graphic, 2017.
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