Cita APA (7a ed.)

Meyer, A., & Meyer, J. (1991). Earth-keepers: Environmental perspectives on hunger, poverty, and injustice. Herald Press.

Cita Chicago Style (17a ed.)

Meyer, Art, y Jocele Meyer. Earth-keepers: Environmental Perspectives on Hunger, Poverty, and Injustice. Scottdale, Pa.: Herald Press, 1991.

Cita MLA (8a ed.)

Meyer, Art, y Jocele Meyer. Earth-keepers: Environmental Perspectives on Hunger, Poverty, and Injustice. Herald Press, 1991.