APA-čujuhus (7. p.)
Turk, A. (1978). Environmental science (2d ed.). Saunders.
Chicago-čujuhus (17. p.)
Turk, Amos. Environmental Science. 2d ed. Philadelphia: Saunders, 1978.
MLA-čujuhus (9. p.)
Turk, Amos. Environmental Science. 2d ed. Saunders, 1978.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.