Hansen, K. H. (1957). High school teaching. Prenitce-Hall.
Lua i Stíl Chicago (17ú heag.)Hansen, Kenneth Harvey. High School Teaching. Englewood Cliffs, N.J: Prenitce-Hall, 1957.
Lua MLA (9ú heag.)Hansen, Kenneth Harvey. High School Teaching. Prenitce-Hall, 1957.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.