Cita APA (7a ed.)

Kohák, E. V., & Rolston, H. (2000). The green halo: A bird's-eye view of ecological ethics (First printing.). Open court.

Cita Chicago Style (17a ed.)

Kohák, Erazim V., y Holmes Rolston. The Green Halo: A Bird's-eye View of Ecological Ethics. First printing. Chicago and La Salle: Open court, 2000.

Cita MLA (9a ed.)

Kohák, Erazim V., y Holmes Rolston. The Green Halo: A Bird's-eye View of Ecological Ethics. First printing. Open court, 2000.