APA Style

Chall, Jeanne S, Conard, Sue S. (1991). Should textbooks challenge students?: the case for easier oe harder textbooks . New York: Teachers College Press.

Chicago Style

Chall, Jeanne S, Conard, Sue S. Should textbooks challenge students?: the case for easier oe harder textbooks. New York: Teachers College Press, 1991. Buku Teks.

MLA Style

Chall, Jeanne S, Conard, Sue S. Should textbooks challenge students?: the case for easier oe harder textbooks. New York: Teachers College Press, 1991. Buku Teks.

Turabian Style

Chall, Jeanne S, Conard, Sue S. Should textbooks challenge students?: the case for easier oe harder textbooks. New York: Teachers College Press, 1991. Buku Teks.