NCERT. (2012). BIOLOGY TEXTBOOK FOR CLASS XII. NCERT PUBLICATIONS.
Chicago-čujuhus (17. p.)NCERT. BIOLOGY TEXTBOOK FOR CLASS XII. NEW DELHI: NCERT PUBLICATIONS, 2012.
MLA-čujuhus (9. p.)NCERT. BIOLOGY TEXTBOOK FOR CLASS XII. NCERT PUBLICATIONS, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.