Hamilton, R., & Ghatala, E. (1994). Learning and instruction. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Hamilton, Richard, agus Elizabeth Ghatala. Learning and Instruction. New York: McGraw-Hill, 1994.
Lua MLA (9ú heag.)Hamilton, Richard, agus Elizabeth Ghatala. Learning and Instruction. McGraw-Hill, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.