APA (7e ed.) Bronvermelding

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.

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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