MSBSESE. (2006). Towards sustainable development Std XI (Environment education). Author.
Chicago-referens (17:e uppl.)MSBSESE. Towards Sustainable Development Std XI (Environment Education). Pune: Author, 2006.
MLA-referens (9:e uppl.)MSBSESE. Towards Sustainable Development Std XI (Environment Education). Author, 2006.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.