APA
Pearce D., Markandya A., Barrett S. & Barbier E. (1991). Blueprint 2 : Greening The World Economy. : Earthscan Publications Ltd. London.
Chicago
Pearce D, Markandya A, Barrett S and Barbier E. 1991. Blueprint 2 : Greening The World Economy. : Earthscan Publications Ltd. London.
Harvard
Pearce D., Markandya A., Barrett S. and Barbier E. (1991). Blueprint 2 : Greening The World Economy. : Earthscan Publications Ltd. London.
MLA
Pearce D, Markandya A, Barrett S and Barbier E. Blueprint 2 : Greening The World Economy. : Earthscan Publications Ltd. London. 1991.