Mayfield, M. (1994). Thinking for yourself: Developing critical thinking skills through reading and writing (3rd ed.). Wadsworth.
Lua i Stíl Chicago (17ú heag.)Mayfield, Marlys. Thinking for Yourself: Developing Critical Thinking Skills Through Reading and Writing. 3rd ed. Belmont, Calif: Wadsworth, 1994.
Lua MLA (9ú heag.)Mayfield, Marlys. Thinking for Yourself: Developing Critical Thinking Skills Through Reading and Writing. 3rd ed. Wadsworth, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.