Yost, C. P. (1962). Teaching safety in the elementary school. American Association for Health.
Chicago-Zitierstil (17. Ausg.)Yost, Charles Peter. Teaching Safety in the Elementary School. Washington: American Association for Health, 1962.
MLA-Zitierstil (9. Ausg.)Yost, Charles Peter. Teaching Safety in the Elementary School. American Association for Health, 1962.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.