Howes, V. M. (1970). Individualization of instruction: A teaching strategy. Collier-Macmillan.
Lua i Stíl Chicago (17ú heag.)Howes, Virgil M. Individualization of Instruction: A Teaching Strategy. London: Collier-Macmillan, 1970.
Lua MLA (8ú heag.)Howes, Virgil M. Individualization of Instruction: A Teaching Strategy. Collier-Macmillan, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.