APA
Zarrilli S. a. J. V., Vossenaar R. (. & Jha V. (. (1997). Eco-labelling and international trade. London: Macmillan.
Chicago
Zarrilli Simonetta and Jha V, Vossenaar Rene (ed) and Jha Veena (ed). 1997. Eco-labelling and international trade. London: Macmillan.
Harvard
Zarrilli S. a. J. V., Vossenaar R. (. and Jha V. (. (1997). Eco-labelling and international trade. London: Macmillan.
MLA
Zarrilli Simonetta and Jha V, Vossenaar Rene (ed) and Jha Veena (ed). Eco-labelling and international trade. London: Macmillan. 1997.