Zapf, H. (2016). Literature as Cultural Ecology: Sustainable Texts. Bloomsbury Academic.
Lua i Stíl Chicago (17ú heag.)Zapf, Hubert. Literature as Cultural Ecology: Sustainable Texts. London: Bloomsbury Academic, 2016.
Lua MLA (9ú heag.)Zapf, Hubert. Literature as Cultural Ecology: Sustainable Texts. Bloomsbury Academic, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.