MSBSHSE. (2007). Towards Sustainable development std XII (Environment educaation). Author.
Chicago-čujuhus (17. p.)MSBSHSE. Towards Sustainable Development Std XII (Environment Educaation). Pune: Author, 2007.
MLA-čujuhus (9. p.)MSBSHSE. Towards Sustainable Development Std XII (Environment Educaation). Author, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.