APA استشهاد

Brown, L. R. (2001). Eco-Economy: Building an economy for the earth. Orient Longman.

استشهاد بنمط شيكاغو

Brown, Lester R. Eco-Economy: Building an Economy for the Earth. Hyderabad: Orient Longman, 2001.

MLA استشهاد

Brown, Lester R. Eco-Economy: Building an Economy for the Earth. Orient Longman, 2001.