APA Style

Vig, N, J., Kraft, M, E. (2013). Environmental Policy : New Directions for the Twenty-First Century, 8th Edition (Edisi-8). London: Sage Publications.

MLA Style

Vig, Norman, J.., Kraft, Michael, E.. "Environmental Policy : New Directions for the Twenty-First Century, 8th Edition". Edisi-8 London: Sage Publications, 2013. Community.