Leggat, R. (1972). Lights please!: Using projectors in the classroom. National Committee for Audio-Visual Aids in Education.
Chicago-Zitierstil (17. Ausg.)Leggat, Robert. Lights Please!: Using Projectors in the Classroom. London: National Committee for Audio-Visual Aids in Education, 1972.
MLA-Zitierstil (9. Ausg.)Leggat, Robert. Lights Please!: Using Projectors in the Classroom. National Committee for Audio-Visual Aids in Education, 1972.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.