APA (7th ed.) Citation

Schalk, D. L. (1979). The Spectrum of political engagement. Princeton U.P.

Chicago Style (17th ed.) Citation

Schalk, David L. The Spectrum of Political Engagement. Princeton U.P, 1979.

MLA (9th ed.) Citation

Schalk, David L. The Spectrum of Political Engagement. Princeton U.P, 1979.

Warning: These citations may not always be 100% accurate.