Lua APA (7ú heag.)

Tacio, H. D. (2017). Hard times for Philippine birds. Philippine Graphic.

Lua i Stíl Chicago (17ú heag.)

Tacio, Henrylito D. "Hard Times for Philippine Birds." Philippine Graphic 2017.

Lua MLA (8ú heag.)

Tacio, Henrylito D. "Hard Times for Philippine Birds." Philippine Graphic, 2017.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.