Merkoša sitáhtat

APA-čujuhus (7. p.)
Allaby, M. (2000). Basics of environmental science (2nd ed.). Routledge.
Chicago-čujuhus (17. p.)
Allaby, Michael. Basics of Environmental Science. 2nd ed. London ; New York: Routledge, 2000.
MLA-čujuhus (9. p.)
Allaby, Michael. Basics of Environmental Science. 2nd ed. Routledge, 2000.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.