Citação norma APA

Tuxill, J. D., & Peterson, J. A. (1998). Losing strands in the web of life: Vertebrate declines and the conservation of biological diversity. Worldwatch Institute.

Citação norma Chicago

Tuxill, John D., and Jane A. Peterson. Losing Strands in the Web of Life: Vertebrate Declines and the Conservation of Biological Diversity. Washington, DC: Worldwatch Institute, 1998.

Citação norma MLA

Tuxill, John D., and Jane A. Peterson. Losing Strands in the Web of Life: Vertebrate Declines and the Conservation of Biological Diversity. Worldwatch Institute, 1998.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.