(1980). New directories for teaching and learning. Jossey-Bass.
Lua i Stíl Chicago (17ú heag.)New Directories for Teaching and Learning. San Francisco: Jossey-Bass, 1980.
Lua MLA (9ú heag.)New Directories for Teaching and Learning. Jossey-Bass, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.