APA
Gunningham N., Thornton D. & Kagan R. A. (2003). Shades of green: Business, regulation and environment. Stanford: Stanford Law and Politics.
Chicago
Gunningham Neil, Thornton Dorothy and Kagan Robert A. 2003. Shades of green: Business, regulation and environment. Stanford: Stanford Law and Politics.
Harvard
Gunningham N., Thornton D. and Kagan R. A. (2003). Shades of green: Business, regulation and environment. Stanford: Stanford Law and Politics.
MLA
Gunningham Neil, Thornton Dorothy and Kagan Robert A. Shades of green: Business, regulation and environment. Stanford: Stanford Law and Politics. 2003.