There are several interesting resources available from Harvard Business School for Educators on the topic of sustainability in business enterprises. The website will give you a short abstract of the article. Materials are free to educators. Here are a few titles:
Unruh & Etterson, Growing Green: Three Smart Paths to Developing Sustainable Products.
Werback, A. A Different Way to Formulate Your Business Strategy for Sustainability
Krushwitz & Velken, First Look: Highlights From the Third Annual Sustainability Global Survey.
Lubin et. al. Sustainability Strategy: Transform the Enterprise