Cita APA (7a ed.)

Halweil, B., Mastny, L., Assadourian, E., Starke, L., & Institute, W. (2004). State of world, 2004: A Worldwatch Institute report on progress towords a sustainable society. London : Earthscan.

Cita Chicago Style (17a ed.)

Halweil, Brian, Lisa Mastny, Eric Assadourian, Linda Starke, y Worldwatch Institute. State of World, 2004: A Worldwatch Institute Report on Progress Towords a Sustainable Society. London : Earthscan, 2004.

Cita MLA (9a ed.)

Halweil, Brian, et al. State of World, 2004: A Worldwatch Institute Report on Progress Towords a Sustainable Society. London : Earthscan, 2004.