Lewis, H., L. Fitzpatrick, K. Verghese, K. Sonneveld and R. Jordon (2007), Sustainable packaging redefined, Sustainable Packaging Alliance
Lewis, H. (2008), National Packaging Covenant mid-term review: executive document, Report to National Packaging Covenant Council
Lewis, H. (2009), Packaging and product stewardship: international regulations and policies, Sustainable Packaging Alliance, Melbourne
Lewis, H., K. Verghese, K. Sonneveld and R. Jordon (2009), Sustainable packaging guidelines, Report By Sustainable Packaging Alliance to Woolworths Limited
Lewis, H. (2008-2009), Design for sustainability with plastics: Quickstart series, Prepared for Plastics and Chemicals Industries Association
Verghese, K., H. Lewis, L. Fitzpatrick, G. Di-Mauro Hayes and B. Hedditch (2009), Environmental impact of shopping bags, Melbourne, Report by Sustainable Packaging Alliance for Woolworths Limited
Gertsakis, J. and H. Lewis (2002), ‘Connecting products and systems’, Enviro 2002 Conference, 8 April, Melbourne
Lewis, H. (2005), ‘Beyond the hype: product stewardship discourse and performance in the Australian packaging industry’, Asia Pacific Researchers in Organization Studies, 11th International Colloquium, Melbourne, Australia, 4-7 December
Lewis, H. (2006), ‘Product stewardship in the packaging industry: Corporate social responsibility or greenwash?’ Proceedings of the Environment Research Event 2006, Sydney, NSW, 10-13 December
Buelow, S., H. Lewis and K. Sonneveld (2009), ‘The role of labels in directing consumer packaging waste’, Proceedings of the Environmental Research Event 2009, Noosa Heads, Queensland, 10-13 May