Campbell, N. A. (2021). Biology: A global approach (12th.). Pearson Education Limited.
Chicago-čujuhus (17. p.)Campbell, Neil A. Biology: A Global Approach. 12th. Harlow, Essex, England: Pearson Education Limited, 2021.
MLA-čujuhus (9. p.)Campbell, Neil A. Biology: A Global Approach. 12th. Pearson Education Limited, 2021.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.