APA-čujuhus (7. p.)

Pickering, K. T., & Owen, L. A. (1997). An introduction to global environmental issues (2nd ed.). Routledge.

Chicago-čujuhus (17. p.)

Pickering, Kevin T., juo Lewis A. Owen. An Introduction to Global Environmental Issues. 2nd ed. London: Routledge, 1997.

MLA-čujuhus (9. p.)

Pickering, Kevin T., juo Lewis A. Owen. An Introduction to Global Environmental Issues. 2nd ed. Routledge, 1997.

Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.