APA (7e ed.) Bronvermelding
Johnson, H. D. (2008). Green plans: Blueprint for a sustainable earth (3rd ed.). University of Nebraska Press.
Chicago (17e ed.) Bronvermelding
Johnson, Huey D. Green Plans: Blueprint for a Sustainable Earth. 3rd ed. Lincoln: University of Nebraska Press, 2008.
MLA (9e ed.) Bronvermelding
Johnson, Huey D. Green Plans: Blueprint for a Sustainable Earth. 3rd ed. University of Nebraska Press, 2008.
Let op: Deze citaties zijn niet altijd 100% accuraat.