Hill, F. E. (1937). Listen and learn: Fifteen years of adult education on the air. American Association For Adult Education.
Chicago-Zitierstil (17. Ausg.)Hill, Frank Ernest. Listen and Learn: Fifteen Years of Adult Education on the Air. New York: American Association For Adult Education, 1937.
MLA-Zitierstil (8. Ausg.)Hill, Frank Ernest. Listen and Learn: Fifteen Years of Adult Education on the Air. American Association For Adult Education, 1937.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.