Citazione Stile APA (7a Edizione)

National Commission on Safety Education. (1961). Safety guides for you - in the primary grades. s. n.

Citazione stile Chigago Style (17a edizione)

National Commission on Safety Education. Safety Guides for You - in the Primary Grades. Washington, D. C: s. n, 1961.

Citatione MLA (9a ed.)

National Commission on Safety Education. Safety Guides for You - in the Primary Grades. s. n, 1961.