APA (7e ed.) Bronvermelding

Levis, E. C. (1923). Citizenship: A practical textbook in community civics. Harcourt, Brace and company.

Chicago (17e ed.) Bronvermelding

Levis, Ella Cannon. Citizenship: A Practical Textbook in Community Civics. New York: Harcourt, Brace and company, 1923.

MLA (8e ed.) Bronvermelding

Levis, Ella Cannon. Citizenship: A Practical Textbook in Community Civics. Harcourt, Brace and company, 1923.