APA-čujuhus (7. p.)
Duffy Gerald G. (1989). Improving classroom reading instruction (2nd ed.). Random House.
Chicago-čujuhus (17. p.)
Duffy Gerald G. Improving Classroom Reading Instruction. 2nd ed. New York: Random House, 1989.
MLA-čujuhus (9. p.)
Duffy Gerald G. Improving Classroom Reading Instruction. 2nd ed. Random House, 1989.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.