MSBSHSE. (2007). Towards sustainable development std XII (Environment education). Author.
Chicago-referens (17:e uppl.)MSBSHSE. Towards Sustainable Development Std XII (Environment Education). Pune: Author, 2007.
MLA-referens (9:e uppl.)MSBSHSE. Towards Sustainable Development Std XII (Environment Education). Author, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.